Comparative analysis of Alignment/Mapping Pipelines in SARS-CoV-2-infected neuron cells (Focused on Mean/Fold/FDR)
Mira Sohn
Raw data
- Study summary: Neurological complications are common in patients with COVID-19. While SARS-CoV-2, the causal pathogen of COVID-19, has been detected in some patient brains, its ability to infect brain cells and impact their function are not well understood, and experimental models using human brain cells are urgently needed. Here we investigated the susceptibility of human induced pluripotent stem cell (hiPSC)-derived monolayer brain cells and region-specific brain organoids to SARS-CoV-2 infection. We found modest numbers of infected neurons and astrocytes, but greater infection of choroid plexus epithelial cells. We optimized a protocol to generate choroid plexus organoids from hiPSCs, which revealed productive SARS-CoV-2 infection that leads to increased cell death and transcriptional dysregulation indicative of an inflammatory response and cellular function deficits. Together, our results provide evidence for SARS-CoV-2 neurotropism and support use of hiPSC-derived brain organoids as a platform to investigate the cellular susceptibility, disease mechanisms, and treatment strategies for SARS-CoV-2 infection. Bulk RNA-seq of choroid plexus organoids (CPOs) was performed on mock 72 hours post-infection (hpi), SARS-CoV-2 24 hpi, and SARS-CoV-2 72 hpi samples. All conditions were profiled in triplicate.
Loading packages
- AnnotationHub: https://bioconductor.org/packages/devel/bioc/vignettes/AnnotationHub/inst/doc/AnnotationHub.html
- DESeq2: http://bioconductor.org/packages/devel/bioc/vignettes/DESeq2/inst/doc/DESeq2.html
library(data.table)
library(tidyverse)
library(rmarkdown)
library(ggplot2)
library(pheatmap)
library(AnnotationHub)
library(tximport)
library(Rsubread)
library(DESeq2)
library(UpSetR)
library(ensembldb)
library(gridExtra)Setting AnnotationHub
Assign your species of interest
DB <- "EnsDb" # Set your DB of interest
AnnotationSpecies <- "Homo sapiens" # Set your species
ah <- AnnotationHub(hub=getAnnotationHubOption("URL")) # Bring annotation DBRunning AnnotationHub
# Filter annotation of interest
ahQuery <- query(ah,
pattern=c(DB, AnnotationSpecies),
ignore.case=T)
# Select the most recent data
DBName <- mcols(ahQuery) %>%
rownames() %>%
tail(1)
anno.db <- ah[[DBName]]
# Explore your EnsDb object with following accessors:
# columns(AnnpDb)
# keytypes(AnnoDb)
# keys(AnnoDb, keytype=..)
# select(AnnoDb, keys=.., columns=.., keytype=...)
AnnoKey <- keys(anno.db, keytype="TXID")
# Note: Annotation has to be done with not genome but transcripts
AnnoDb <- select(anno.db,
AnnoKey,
keytype="TXID",
columns=c("GENEID", "GENENAME"))
# Check if your AnnoDb has been extracted and saved correctely
class(AnnoDb)## [1] "data.frame"head(AnnoDb) # The column 1 has to assign transcript (e.g. ENSEMBLTRANS)## TXID GENEID GENENAME
## 1 ENST00000000233 ENSG00000004059 ARF5
## 2 ENST00000000412 ENSG00000003056 M6PR
## 3 ENST00000000442 ENSG00000173153 ESRRA
## 4 ENST00000001008 ENSG00000004478 FKBP4
## 5 ENST00000001146 ENSG00000003137 CYP26B1
## 6 ENST00000002125 ENSG00000003509 NDUFAF7Metadata setting
# This code chunk needs to be written by yourself
# Define sample names
SampleNames <- c(paste0("Mock-rep", 1:3), paste0("SARS-CoV-2-rep", 1:3))
# Aligner names
Aligners <- c("Salmon", "STAR", "HISAT2")
# Define group level
GroupLevel <- c("Mock", "Covid")
# Define contrast for DE analysis
Contrast <- c("Group", GroupLevel)
# Set a function for file paths
path.fn <- function(head, tail) {
vec <- c(paste0("../",
head, # head = e.g. "hisat2", "star", or "salmon"
"_output/",
SampleNames,
tail)) # tail = file name after SampleNames
return(vec)
}
# Define .sf file path
sf <- path.fn("salmon",
".salmon_quant/quant.sf")
# Define STAR file path
star <- path.fn("star",
"Aligned.sortedByCoord.out.bam")
# Define HISAT2 file path
hisat <- path.fn("hisat2",
".sorted.bam")
# Define sample groups
group <- c(rep("Mock", 3), rep("Covid", 3))
# Create metadata
metadata <- data.frame(Sample=factor(SampleNames, levels=SampleNames),
Group=factor(group, levels=GroupLevel),
Salmon_path=sf,
STAR_path=star,
HISAT2_path=hisat)
# Assign row names with sample names
rownames(metadata) <- SampleNames
# Explore the metadata
print(metadata)## Sample Group
## Mock-rep1 Mock-rep1 Mock
## Mock-rep2 Mock-rep2 Mock
## Mock-rep3 Mock-rep3 Mock
## SARS-CoV-2-rep1 SARS-CoV-2-rep1 Covid
## SARS-CoV-2-rep2 SARS-CoV-2-rep2 Covid
## SARS-CoV-2-rep3 SARS-CoV-2-rep3 Covid
## Salmon_path
## Mock-rep1 ../salmon_output/Mock-rep1.salmon_quant/quant.sf
## Mock-rep2 ../salmon_output/Mock-rep2.salmon_quant/quant.sf
## Mock-rep3 ../salmon_output/Mock-rep3.salmon_quant/quant.sf
## SARS-CoV-2-rep1 ../salmon_output/SARS-CoV-2-rep1.salmon_quant/quant.sf
## SARS-CoV-2-rep2 ../salmon_output/SARS-CoV-2-rep2.salmon_quant/quant.sf
## SARS-CoV-2-rep3 ../salmon_output/SARS-CoV-2-rep3.salmon_quant/quant.sf
## STAR_path
## Mock-rep1 ../star_output/Mock-rep1Aligned.sortedByCoord.out.bam
## Mock-rep2 ../star_output/Mock-rep2Aligned.sortedByCoord.out.bam
## Mock-rep3 ../star_output/Mock-rep3Aligned.sortedByCoord.out.bam
## SARS-CoV-2-rep1 ../star_output/SARS-CoV-2-rep1Aligned.sortedByCoord.out.bam
## SARS-CoV-2-rep2 ../star_output/SARS-CoV-2-rep2Aligned.sortedByCoord.out.bam
## SARS-CoV-2-rep3 ../star_output/SARS-CoV-2-rep3Aligned.sortedByCoord.out.bam
## HISAT2_path
## Mock-rep1 ../hisat2_output/Mock-rep1.sorted.bam
## Mock-rep2 ../hisat2_output/Mock-rep2.sorted.bam
## Mock-rep3 ../hisat2_output/Mock-rep3.sorted.bam
## SARS-CoV-2-rep1 ../hisat2_output/SARS-CoV-2-rep1.sorted.bam
## SARS-CoV-2-rep2 ../hisat2_output/SARS-CoV-2-rep2.sorted.bam
## SARS-CoV-2-rep3 ../hisat2_output/SARS-CoV-2-rep3.sorted.bamfeatureCounts parameter setting
# "mm10", "mm9", "hg38", or "hg19"
annot.inbuilt <- "hg38"
# GTF file path
annot.ext <- "../../SEQC/reference_GENCODE/gencode.v36.primary_assembly.annotation.gtf"
# annotation type:
# e.g.: "gene_id", "transcript_id", or "gene_name"
GTF.attrType <- "gene_id"
# Number of cores
nthread <- 16
# Set a function importing counts from BAM files with featureCounts()
fcounts.fn <- function(vec) {
fc <- featureCounts(files=vec, # a vector assigning BAM file paths
annot.inbuilt=annot.inbuilt,
annot.ext=annot.ext,
GTF.attrType=GTF.attrType,
isGTFAnnotationFile=T,
nthread=nthread,
isPairedEnd=F, # Set this parameter correctly
verbose=T)
return(fc$counts)
}Importing counts
Importing Salmon counts
Note:
txi1 <- tximport(…, txOut=F)
txi2 <- tximport(…, txOut=T)
txi2 <- summarizedToGene(…)
counts extracted from txi1 and txi2 are the same
# Import gene level summarized counts
salmon.txi <- tximport(metadata$Salmon_path,
type = "salmon",
tx2gene=AnnoDb,
ignoreTxVersion=T,
txOut=F) # TRUE for transcript level, FALSE for gene level
# Extract the counts and save as a data frame
salmon.counts <- salmon.txi$counts
# Explore the salmon count data frame
head(salmon.counts)## [,1] [,2] [,3] [,4] [,5] [,6]
## ENSG00000000003 8991.942 7660.942 7504.000 11037.869 6193.989 7772.929
## ENSG00000000005 7.000 4.000 0.000 2.000 1.000 4.000
## ENSG00000000419 889.000 928.001 730.000 1211.001 777.000 991.000
## ENSG00000000457 699.297 564.374 566.745 832.783 437.987 596.733
## ENSG00000000460 452.703 366.157 397.262 740.218 388.013 514.268
## ENSG00000000938 0.000 1.000 0.000 0.000 0.000 0.000dim(salmon.counts)## [1] 60217 6summary(salmon.counts)## V1 V2 V3
## Min. : 0.0 Min. : 0.0 Min. : 0.0
## 1st Qu.: 0.0 1st Qu.: 0.0 1st Qu.: 0.0
## Median : 1.0 Median : 1.0 Median : 0.0
## Mean : 444.8 Mean : 434.4 Mean : 385.6
## 3rd Qu.: 21.0 3rd Qu.: 20.0 3rd Qu.: 16.0
## Max. :1809942.0 Max. :1898215.0 Max. :1628670.0
## V4 V5 V6
## Min. : 0.0 Min. : 0.0 Min. : 0.0
## 1st Qu.: 0.0 1st Qu.: 0.0 1st Qu.: 0.0
## Median : 1.0 Median : 0.0 Median : 0.0
## Mean : 562.2 Mean : 308.0 Mean : 427.3
## 3rd Qu.: 26.0 3rd Qu.: 13.8 3rd Qu.: 18.3
## Max. :1416833.0 Max. :775055.0 Max. :1265356.0Importing STAR counts
# Extract counts by running featureCounts()
star.counts <- fcounts.fn(metadata$STAR_path)##
## ========== _____ _ _ ____ _____ ______ _____
## ===== / ____| | | | _ \| __ \| ____| /\ | __ \
## ===== | (___ | | | | |_) | |__) | |__ / \ | | | |
## ==== \___ \| | | | _ <| _ /| __| / /\ \ | | | |
## ==== ____) | |__| | |_) | | \ \| |____ / ____ \| |__| |
## ========== |_____/ \____/|____/|_| \_\______/_/ \_\_____/
## Rsubread 2.4.0
##
## //========================== featureCounts setting ===========================\\
## || ||
## || Input files : 6 BAM files ||
## || ||
## || Mock-rep1Aligned.sortedByCoord.out.bam ||
## || Mock-rep2Aligned.sortedByCoord.out.bam ||
## || Mock-rep3Aligned.sortedByCoord.out.bam ||
## || SARS-CoV-2-rep1Aligned.sortedByCoord.out.bam ||
## || SARS-CoV-2-rep2Aligned.sortedByCoord.out.bam ||
## || SARS-CoV-2-rep3Aligned.sortedByCoord.out.bam ||
## || ||
## || Paired-end : no ||
## || Count read pairs : no ||
## || Annotation : gencode.v36.primary_assembly.annotation.gtf ... ||
## || Dir for temp files : . ||
## || Threads : 16 ||
## || Level : meta-feature level ||
## || Multimapping reads : counted ||
## || Multi-overlapping reads : not counted ||
## || Min overlapping bases : 1 ||
## || ||
## \\============================================================================//
##
## //================================= Running ==================================\\
## || ||
## || Load annotation file gencode.v36.primary_assembly.annotation.gtf ... ||
## || Features : 1430132 ||
## || Meta-features : 60719 ||
## || Chromosomes/contigs : 47 ||
## || ||
## || Process BAM file Mock-rep1Aligned.sortedByCoord.out.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 54178083 ||
## || Successfully assigned alignments : 29102650 (53.7%) ||
## || Running time : 0.06 minutes ||
## || ||
## || Process BAM file Mock-rep2Aligned.sortedByCoord.out.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 52009761 ||
## || Successfully assigned alignments : 28582595 (55.0%) ||
## || Running time : 0.06 minutes ||
## || ||
## || Process BAM file Mock-rep3Aligned.sortedByCoord.out.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 44486311 ||
## || Successfully assigned alignments : 25165867 (56.6%) ||
## || Running time : 0.05 minutes ||
## || ||
## || Process BAM file SARS-CoV-2-rep1Aligned.sortedByCoord.out.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 65798929 ||
## || Successfully assigned alignments : 35937122 (54.6%) ||
## || Running time : 0.08 minutes ||
## || ||
## || Process BAM file SARS-CoV-2-rep2Aligned.sortedByCoord.out.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 34330831 ||
## || Successfully assigned alignments : 19826399 (57.8%) ||
## || Running time : 0.04 minutes ||
## || ||
## || Process BAM file SARS-CoV-2-rep3Aligned.sortedByCoord.out.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 50803344 ||
## || Successfully assigned alignments : 27376989 (53.9%) ||
## || Running time : 0.06 minutes ||
## || ||
## || Write the final count table. ||
## || Write the read assignment summary. ||
## || ||
## \\============================================================================//# Explore the STAR count data frame
head(star.counts)## Mock-rep1Aligned.sortedByCoord.out.bam
## ENSG00000223972.5 24
## ENSG00000227232.5 52
## ENSG00000278267.1 0
## ENSG00000243485.5 8
## ENSG00000284332.1 0
## ENSG00000237613.2 327
## Mock-rep2Aligned.sortedByCoord.out.bam
## ENSG00000223972.5 13
## ENSG00000227232.5 46
## ENSG00000278267.1 0
## ENSG00000243485.5 9
## ENSG00000284332.1 0
## ENSG00000237613.2 311
## Mock-rep3Aligned.sortedByCoord.out.bam
## ENSG00000223972.5 17
## ENSG00000227232.5 32
## ENSG00000278267.1 0
## ENSG00000243485.5 7
## ENSG00000284332.1 0
## ENSG00000237613.2 270
## SARS-CoV-2-rep1Aligned.sortedByCoord.out.bam
## ENSG00000223972.5 29
## ENSG00000227232.5 39
## ENSG00000278267.1 0
## ENSG00000243485.5 5
## ENSG00000284332.1 0
## ENSG00000237613.2 101
## SARS-CoV-2-rep2Aligned.sortedByCoord.out.bam
## ENSG00000223972.5 6
## ENSG00000227232.5 26
## ENSG00000278267.1 0
## ENSG00000243485.5 2
## ENSG00000284332.1 0
## ENSG00000237613.2 97
## SARS-CoV-2-rep3Aligned.sortedByCoord.out.bam
## ENSG00000223972.5 16
## ENSG00000227232.5 45
## ENSG00000278267.1 0
## ENSG00000243485.5 10
## ENSG00000284332.1 0
## ENSG00000237613.2 116dim(star.counts)## [1] 60719 6summary(star.counts)## Mock-rep1Aligned.sortedByCoord.out.bam Mock-rep2Aligned.sortedByCoord.out.bam
## Min. : 0.0 Min. : 0.0
## 1st Qu.: 0.0 1st Qu.: 0.0
## Median : 2.0 Median : 1.0
## Mean : 479.3 Mean : 470.7
## 3rd Qu.: 31.0 3rd Qu.: 29.0
## Max. :2096551.0 Max. :2203523.0
## Mock-rep3Aligned.sortedByCoord.out.bam
## Min. : 0.0
## 1st Qu.: 0.0
## Median : 1.0
## Mean : 414.5
## 3rd Qu.: 23.0
## Max. :1850592.0
## SARS-CoV-2-rep1Aligned.sortedByCoord.out.bam
## Min. : 0.0
## 1st Qu.: 0.0
## Median : 2.0
## Mean : 591.9
## 3rd Qu.: 38.0
## Max. :1464055.0
## SARS-CoV-2-rep2Aligned.sortedByCoord.out.bam
## Min. : 0.0
## 1st Qu.: 0.0
## Median : 1.0
## Mean : 326.5
## 3rd Qu.: 20.0
## Max. :887660.0
## SARS-CoV-2-rep3Aligned.sortedByCoord.out.bam
## Min. : 0.0
## 1st Qu.: 0.0
## Median : 1.0
## Mean : 450.9
## 3rd Qu.: 27.0
## Max. :1410329.0Importing HISAT2 counts
# Extract counts by running featureCounts()
hisat2.counts <- fcounts.fn(metadata$HISAT2_path)##
## ========== _____ _ _ ____ _____ ______ _____
## ===== / ____| | | | _ \| __ \| ____| /\ | __ \
## ===== | (___ | | | | |_) | |__) | |__ / \ | | | |
## ==== \___ \| | | | _ <| _ /| __| / /\ \ | | | |
## ==== ____) | |__| | |_) | | \ \| |____ / ____ \| |__| |
## ========== |_____/ \____/|____/|_| \_\______/_/ \_\_____/
## Rsubread 2.4.0
##
## //========================== featureCounts setting ===========================\\
## || ||
## || Input files : 6 BAM files ||
## || ||
## || Mock-rep1.sorted.bam ||
## || Mock-rep2.sorted.bam ||
## || Mock-rep3.sorted.bam ||
## || SARS-CoV-2-rep1.sorted.bam ||
## || SARS-CoV-2-rep2.sorted.bam ||
## || SARS-CoV-2-rep3.sorted.bam ||
## || ||
## || Paired-end : no ||
## || Count read pairs : no ||
## || Annotation : gencode.v36.primary_assembly.annotation.gtf ... ||
## || Dir for temp files : . ||
## || Threads : 16 ||
## || Level : meta-feature level ||
## || Multimapping reads : counted ||
## || Multi-overlapping reads : not counted ||
## || Min overlapping bases : 1 ||
## || ||
## \\============================================================================//
##
## //================================= Running ==================================\\
## || ||
## || Load annotation file gencode.v36.primary_assembly.annotation.gtf ... ||
## || Features : 1430132 ||
## || Meta-features : 60719 ||
## || Chromosomes/contigs : 47 ||
## || ||
## || Process BAM file Mock-rep1.sorted.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 54439819 ||
## || Successfully assigned alignments : 27242652 (50.0%) ||
## || Running time : 0.06 minutes ||
## || ||
## || Process BAM file Mock-rep2.sorted.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 51357583 ||
## || Successfully assigned alignments : 26791035 (52.2%) ||
## || Running time : 0.06 minutes ||
## || ||
## || Process BAM file Mock-rep3.sorted.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 44166286 ||
## || Successfully assigned alignments : 23859049 (54.0%) ||
## || Running time : 0.05 minutes ||
## || ||
## || Process BAM file SARS-CoV-2-rep1.sorted.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 68677505 ||
## || Successfully assigned alignments : 33942278 (49.4%) ||
## || Running time : 0.08 minutes ||
## || ||
## || Process BAM file SARS-CoV-2-rep2.sorted.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 35316473 ||
## || Successfully assigned alignments : 18758834 (53.1%) ||
## || Running time : 0.04 minutes ||
## || ||
## || Process BAM file SARS-CoV-2-rep3.sorted.bam... ||
## || ||
## || Chromosomes/contigs in input file but not in annotation ||
## || KI270425.1 ||
## || KI270303.1 ||
## || KI270384.1 ||
## || KI270320.1 ||
## || KI270438.1 ||
## || KI270316.1 ||
## || KI270581.1 ||
## || KI270333.1 ||
## || KI270757.1 ||
## || KI270329.1 ||
## || KI270509.1 ||
## || KI270468.1 ||
## || KI270530.1 ||
## || KI270710.1 ||
## || KI270363.1 ||
## || KI270706.1 ||
## || KI270539.1 ||
## || KI270417.1 ||
## || KI270723.1 ||
## || KI270376.1 ||
## || KI270719.1 ||
## || KI270740.1 ||
## || KI270312.1 ||
## || KI270393.1 ||
## || KI270736.1 ||
## || KI270389.1 ||
## || GL000224.1 ||
## || KI270753.1 ||
## || KI270749.1 ||
## || KI270590.1 ||
## || KI270338.1 ||
## || KI270522.1 ||
## || KI270518.1 ||
## || KI270372.1 ||
## || KI270715.1 ||
## || KI270548.1 ||
## || KI270732.1 ||
## || KI270304.1 ||
## || KI270385.1 ||
## || KI270745.1 ||
## || KI270317.1 ||
## || KI270582.1 ||
## || KI270334.1 ||
## || KI270364.1 ||
## || KI270707.1 ||
## || KI270544.1 ||
## || KI270422.1 ||
## || KI270418.1 ||
## || KI270381.1 ||
## || KI270724.1 ||
## || KI270435.1 ||
## || GL000208.1 ||
## || KI270741.1 ||
## || KI270394.1 ||
## || KI270737.1 ||
## || KI270330.1 ||
## || KI270448.1 ||
## || KI270754.1 ||
## || KI270510.1 ||
## || KI270591.1 ||
## || KI270587.1 ||
## || KI270465.1 ||
## || KI270519.1 ||
## || KI270414.1 ||
## || KI270720.1 ||
## || KI270373.1 ||
## || KI270716.1 ||
## || KI270390.1 ||
## || KI270305.1 ||
## || KI270386.1 ||
## || KI270729.1 ||
## || GL000221.1 ||
## || KI270322.1 ||
## || KI270746.1 ||
## || KI270583.1 ||
## || KI270579.1 ||
## || KI270335.1 ||
## || KI270515.1 ||
## || KI270528.1 ||
## || KI270712.1 ||
## || KI270708.1 ||
## || KI270423.1 ||
## || KI270419.1 ||
## || KI270382.1 ||
## || KI270725.1 ||
## || KI270378.1 ||
## || KI270742.1 ||
## || KI270395.1 ||
## || KI270738.1 ||
## || GL000226.1 ||
## || KI270755.1 ||
## || KI270511.1 ||
## || KI270507.1 ||
## || KI270588.1 ||
## || KI270466.1 ||
## || GL000008.2 ||
## || KI270374.1 ||
## || KI270717.1 ||
## || KI270310.1 ||
## || KI270391.1 ||
## || KI270387.1 ||
## || KI270751.1 ||
## || KI270747.1 ||
## || KI270584.1 ||
## || KI270340.1 ||
## || KI270336.1 ||
## || KI270516.1 ||
## || KI270411.1 ||
## || KI270529.1 ||
## || KI270366.1 ||
## || KI270709.1 ||
## || KI270424.1 ||
## || KI270730.1 ||
## || KI270302.1 ||
## || KI270383.1 ||
## || KI270379.1 ||
## || GL000214.1 ||
## || KI270743.1 ||
## || KI270315.1 ||
## || KI270396.1 ||
## || KI270739.1 ||
## || KI270580.1 ||
## || KI270756.1 ||
## || KI270512.1 ||
## || KI270593.1 ||
## || KI270508.1 ||
## || KI270589.1 ||
## || KI270467.1 ||
## || KI270362.1 ||
## || KI270420.1 ||
## || KI270538.1 ||
## || KI270722.1 ||
## || KI270375.1 ||
## || KI270718.1 ||
## || KI270311.1 ||
## || KI270429.1 ||
## || KI270392.1 ||
## || KI270735.1 ||
## || KI270388.1 ||
## || KI270752.1 ||
## || KI270748.1 ||
## || KI270337.1 ||
## || KI270521.1 ||
## || KI270517.1 ||
## || KI270412.1 ||
## || KI270371.1 ||
## || KI270714.1 ||
## || ||
## || Single-end reads are included. ||
## || Total alignments : 52224139 ||
## || Successfully assigned alignments : 26005814 (49.8%) ||
## || Running time : 0.06 minutes ||
## || ||
## || Write the final count table. ||
## || Write the read assignment summary. ||
## || ||
## \\============================================================================//# Explore the HISAT2 count data frame
head(hisat2.counts)## Mock-rep1.sorted.bam Mock-rep2.sorted.bam
## ENSG00000223972.5 20 11
## ENSG00000227232.5 46 62
## ENSG00000278267.1 0 0
## ENSG00000243485.5 6 8
## ENSG00000284332.1 0 0
## ENSG00000237613.2 267 256
## Mock-rep3.sorted.bam SARS-CoV-2-rep1.sorted.bam
## ENSG00000223972.5 12 21
## ENSG00000227232.5 36 57
## ENSG00000278267.1 0 0
## ENSG00000243485.5 4 2
## ENSG00000284332.1 0 0
## ENSG00000237613.2 231 87
## SARS-CoV-2-rep2.sorted.bam SARS-CoV-2-rep3.sorted.bam
## ENSG00000223972.5 4 10
## ENSG00000227232.5 35 57
## ENSG00000278267.1 0 0
## ENSG00000243485.5 2 6
## ENSG00000284332.1 0 0
## ENSG00000237613.2 81 89dim(hisat2.counts)## [1] 60719 6summary(hisat2.counts)## Mock-rep1.sorted.bam Mock-rep2.sorted.bam Mock-rep3.sorted.bam
## Min. : 0.0 Min. : 0.0 Min. : 0.0
## 1st Qu.: 0.0 1st Qu.: 0.0 1st Qu.: 0.0
## Median : 1.0 Median : 1.0 Median : 1.0
## Mean : 448.7 Mean : 441.2 Mean : 392.9
## 3rd Qu.: 27.0 3rd Qu.: 26.0 3rd Qu.: 21.0
## Max. :1876599.0 Max. :2004351.0 Max. :1678512.0
## SARS-CoV-2-rep1.sorted.bam SARS-CoV-2-rep2.sorted.bam
## Min. : 0 Min. : 0.0
## 1st Qu.: 0 1st Qu.: 0.0
## Median : 2 Median : 1.0
## Mean : 559 Mean : 308.9
## 3rd Qu.: 33 3rd Qu.: 17.0
## Max. :1410876 Max. :804577.0
## SARS-CoV-2-rep3.sorted.bam
## Min. : 0.0
## 1st Qu.: 0.0
## Median : 1.0
## Mean : 428.3
## 3rd Qu.: 24.0
## Max. :1328490.0Data cleaning: sample and gene annotation
countList <- list(salmon.counts,
star.counts,
hisat2.counts)
# Assign names of the count data frames in the count list
names(countList) <- Aligners
# Set a function cleaning the count data frame
clean.fn <- function(df) {
# Convert to a data frame
df <- as.data.frame(df)
# Assign column names
names(df) <- SampleNames
# Bring row names to a column
df <- df %>% rownames_to_column(var="GENEID")
return(df)
}
# Set a function to drop GENEID version
clean.annotation.fn <- function(df) {
# Re-annotate without version specification
df <- separate(df, "GENEID", c("GENEID", "Version"))
# Remove version column
df <- df[, colnames(df) != "Version"]
return(df)
}
# Move GENEID to a column
for (x in Aligners) {
countList[[x]] <- clean.fn(countList[[x]])
}
# Remove version of GENEID and duplicated rows in STAR & HISAT2 count tables
for (x in Aligners) {
countList[[x]] <- clean.annotation.fn(countList[[x]]) %>%
distinct()
}
# Explore the cleaned count data frames
head(countList[[1]])## GENEID Mock-rep1 Mock-rep2 Mock-rep3 SARS-CoV-2-rep1 SARS-CoV-2-rep2
## 1 ENSG00000000003 8991.942 7660.942 7504.000 11037.869 6193.989
## 2 ENSG00000000005 7.000 4.000 0.000 2.000 1.000
## 3 ENSG00000000419 889.000 928.001 730.000 1211.001 777.000
## 4 ENSG00000000457 699.297 564.374 566.745 832.783 437.987
## 5 ENSG00000000460 452.703 366.157 397.262 740.218 388.013
## 6 ENSG00000000938 0.000 1.000 0.000 0.000 0.000
## SARS-CoV-2-rep3
## 1 7772.929
## 2 4.000
## 3 991.000
## 4 596.733
## 5 514.268
## 6 0.000head(countList[[2]])## GENEID Mock-rep1 Mock-rep2 Mock-rep3 SARS-CoV-2-rep1 SARS-CoV-2-rep2
## 1 ENSG00000223972 24 13 17 29 6
## 2 ENSG00000227232 52 46 32 39 26
## 3 ENSG00000278267 0 0 0 0 0
## 4 ENSG00000243485 8 9 7 5 2
## 5 ENSG00000284332 0 0 0 0 0
## 6 ENSG00000237613 327 311 270 101 97
## SARS-CoV-2-rep3
## 1 16
## 2 45
## 3 0
## 4 10
## 5 0
## 6 116head(countList[[3]])## GENEID Mock-rep1 Mock-rep2 Mock-rep3 SARS-CoV-2-rep1 SARS-CoV-2-rep2
## 1 ENSG00000223972 20 11 12 21 4
## 2 ENSG00000227232 46 62 36 57 35
## 3 ENSG00000278267 0 0 0 0 0
## 4 ENSG00000243485 6 8 4 2 2
## 5 ENSG00000284332 0 0 0 0 0
## 6 ENSG00000237613 267 256 231 87 81
## SARS-CoV-2-rep3
## 1 10
## 2 57
## 3 0
## 4 6
## 5 0
## 6 89dim(countList[[1]])## [1] 60217 7dim(countList[[2]])## [1] 60675 7dim(countList[[3]])## [1] 60695 7sum(duplicated(countList[[1]]))## [1] 0sum(duplicated(countList[[2]]))## [1] 0sum(duplicated(countList[[3]]))## [1] 0# Convert Salmon counts to integers
countList[["Salmon"]] <- cbind(GENEID=countList[["Salmon"]][, "GENEID"],
round(countList[["Salmon"]][,
colnames(countList[["Salmon"]]) %in% SampleNames]))
# Explore the cleaned count data frames
head(countList[[1]])## GENEID Mock-rep1 Mock-rep2 Mock-rep3 SARS-CoV-2-rep1 SARS-CoV-2-rep2
## 1 ENSG00000000003 8992 7661 7504 11038 6194
## 2 ENSG00000000005 7 4 0 2 1
## 3 ENSG00000000419 889 928 730 1211 777
## 4 ENSG00000000457 699 564 567 833 438
## 5 ENSG00000000460 453 366 397 740 388
## 6 ENSG00000000938 0 1 0 0 0
## SARS-CoV-2-rep3
## 1 7773
## 2 4
## 3 991
## 4 597
## 5 514
## 6 0Plotting sequencing depth
Number of total counts per sample
# Set a function generating a data frame with sequencing depth
seq.depth.fn <- function(df, aligner) {
seqdf <- as.data.frame(colSums(df[, SampleNames])) %>%
rownames_to_column (var="Sample") %>%
mutate(Aligner=aligner)
names(seqdf) <- c("Sample", "Count", "Aligner")
return(seqdf)
}
# Set a function for a bar plot comparing values
comparing.barplot.fn <- function(df, yval, title, ytitle) {
ggplot(df,
aes(x=Sample, y=yval, group=Aligner, fill=Aligner)) +
geom_bar(stat="identity", position="dodge") +
theme_bw() +
theme(axis.text.x=element_text(angle=90, vjust=0.5, hjust=1)) +
ggtitle(title) +
ylab(ytitle)
}
# Initialize the seq depth data frame with the first aligner
seq.depth.df <- seq.depth.fn(countList[[1]], Aligners[1])
# Extend the seq depth data frame with the rest of aligners
for (x in Aligners) {
if (x %in% Aligners[2:length(Aligners)]) {
seq.depth.df <- rbind(seq.depth.df,
seq.depth.fn(countList[[x]], x))
}
}
# Explore how the data frame
print(seq.depth.df)## Sample Count Aligner
## 1 Mock-rep1 26783846 Salmon
## 2 Mock-rep2 26159682 Salmon
## 3 Mock-rep3 23221690 Salmon
## 4 SARS-CoV-2-rep1 33853608 Salmon
## 5 SARS-CoV-2-rep2 18548485 Salmon
## 6 SARS-CoV-2-rep3 25733102 Salmon
## 7 Mock-rep1 29098819 STAR
## 8 Mock-rep2 28578955 STAR
## 9 Mock-rep3 25163540 STAR
## 10 SARS-CoV-2-rep1 35933153 STAR
## 11 SARS-CoV-2-rep2 19824100 STAR
## 12 SARS-CoV-2-rep3 27373805 STAR
## 13 Mock-rep1 27242642 HISAT2
## 14 Mock-rep2 26791029 HISAT2
## 15 Mock-rep3 23859044 HISAT2
## 16 SARS-CoV-2-rep1 33942259 HISAT2
## 17 SARS-CoV-2-rep2 18758823 HISAT2
## 18 SARS-CoV-2-rep3 26005791 HISAT2summary(seq.depth.df)## Sample Count Aligner
## Length:18 Min. :18548485 Length:18
## Class :character 1st Qu.:24185168 Class :character
## Mode :character Median :26471764 Mode :character
## Mean :26492910
## 3rd Qu.:28277668
## Max. :35933153# Convert character vectors to factors
seq.depth.df$Sample <- factor(seq.depth.df$Sample,
levels=SampleNames)
seq.depth.df$Aligner <- factor(seq.depth.df$Aligner,
levels=Aligners)
# Create a plot presenting sequencing depth
comparing.barplot.fn(seq.depth.df,
seq.depth.df$Count,
"Sequencing Depth by Sample and Aligner",
"Count")
Generating DESeq2 objects
- vst() was run to perform variance stabilizing transformation instead of rlog() which takes longer time with similar characteristics.
- The vsd object created by vst() is used for not DE analysis but QC.
- References: DESeq2 doc “Transcript abundance files”, DESeq2 doc “Variance stabilizing transformation”
# Initialize new lists for storing dds objects
ddsList <- countList
# Initialize new lists for storing vsd objects
vsdList <- countList
for (x in Aligners) {
# Create a count matrix from the count data frame
m <- countList[[x]][, colnames(countList[[x]]) != "GENEID"] %>%
as.matrix()
# Assigne row names
rownames(m) <- countList[[x]]$GENEID
# Generate a DESeq2 object
ddsList[[x]] <- DESeqDataSetFromMatrix(m,
colData=metadata,
design=~Group)
# Conduct vst
vsdList[[x]] <- varianceStabilizingTransformation(ddsList[[x]],
blind=TRUE)
}
# Explore generated objects
summary(ddsList)## Length Class Mode
## Salmon 60217 DESeqDataSet S4
## STAR 60675 DESeqDataSet S4
## HISAT2 60695 DESeqDataSet S4summary(vsdList)## Length Class Mode
## Salmon 60217 DESeqTransform S4
## STAR 60675 DESeqTransform S4
## HISAT2 60695 DESeqTransform S4Estimating size factors
- black dashed line: size factor = 1
- Reference: DESeq2 doc “Sample-/gene-dependent normalization factors”
# Calculate and add size factors to the DEseq object
for (x in Aligners) {
ddsList[[x]] <- estimateSizeFactors(ddsList[[x]])
}
# Set a function summarizing size factors by aligner to a data frame
sfactor.fn <- function(df, aligner) {
sizefactor <- as.data.frame(round(sizeFactors(df), 3)) %>%
rownames_to_column(var="Sample") %>%
mutate(Aligner=aligner)
names(sizefactor) <- c("Sample", "Size_Factor", "Aligner")
return(sizefactor)
}
# Initialize a data frame with the first aligner
size.factor.df <- sfactor.fn(ddsList[[1]], Aligners[1])
for (x in Aligners) {
if (x != Aligners[1]) {
size.factor.df <- rbind(size.factor.df,
sfactor.fn(ddsList[[x]], x))
}
}
# Explore the data frame
print(size.factor.df)## Sample Size_Factor Aligner
## 1 Mock-rep1 1.095 Salmon
## 2 Mock-rep2 1.050 Salmon
## 3 Mock-rep3 0.889 Salmon
## 4 SARS-CoV-2-rep1 1.363 Salmon
## 5 SARS-CoV-2-rep2 0.754 Salmon
## 6 SARS-CoV-2-rep3 1.023 Salmon
## 7 Mock-rep1 1.101 STAR
## 8 Mock-rep2 1.056 STAR
## 9 Mock-rep3 0.886 STAR
## 10 SARS-CoV-2-rep1 1.363 STAR
## 11 SARS-CoV-2-rep2 0.747 STAR
## 12 SARS-CoV-2-rep3 1.020 STAR
## 13 Mock-rep1 1.091 HISAT2
## 14 Mock-rep2 1.048 HISAT2
## 15 Mock-rep3 0.894 HISAT2
## 16 SARS-CoV-2-rep1 1.359 HISAT2
## 17 SARS-CoV-2-rep2 0.748 HISAT2
## 18 SARS-CoV-2-rep3 1.025 HISAT2# Convert character vectors to factors
size.factor.df$Sample <- factor(size.factor.df$Sample,
levels=SampleNames)
size.factor.df$Aligner <- factor(size.factor.df$Aligner,
levels=Aligners)
# Plot calculated size factors
comparing.barplot.fn(size.factor.df,
size.factor.df$Size_Factor,
"Size Factors by Aligner and Sample",
"Size Factor") + geom_hline(yintercept=1, linetype="dashed", color="black", size=1)
Estimating dispersion and Wald test
- Dispersion is calculated as a measure of variation instead of variance since variance gets larger when gene expression gets higher.
- Wald test is the default setting of DESeq2 which tests null hypothesis between two groups. You should use Likelihood ratio test (LRT) when comparing more than two groups.
- References: Harvard Chan Bioinformatics Core workshop I, Harvard Chan Bioinformatics Core workshop II, Harvard Chan Bioinformatics Core workshop III, DESeq2 "Wald test indivisual steps, DESeq2 doc “Likelihood ratio test”
for (x in Aligners) {
# Dispersion
ddsList[[x]] <- estimateDispersions(ddsList[[x]])
# Wald test
ddsList[[x]] <- nbinomWaldTest(ddsList[[x]])
}
# Explore generated data in the dds object
ddsList[[1]]## class: DESeqDataSet
## dim: 60217 6
## metadata(1): version
## assays(4): counts mu H cooks
## rownames(60217): ENSG00000000003 ENSG00000000005 ... ENSG00000288683
## ENSG00000288696
## rowData names(22): baseMean baseVar ... deviance maxCooks
## colnames(6): Mock-rep1 Mock-rep2 ... SARS-CoV-2-rep2 SARS-CoV-2-rep3
## colData names(6): Sample Group ... HISAT2_path sizeFactorSample QC: Principal Component Analysis (PCA)
Identifies source of variation and sample outliers
- Reference: DESeq2 doc “Principal component plot of the samples”, DESeq2 doc “Heatmap of the sample-to-sample distances”
# Assigne what to compare
GroupOfInterest <- Contrast[1]
# Set a function for sample pca
qcpca.fn <- function(obj, title) {
plotPCA(obj,
intgroup=GroupOfInterest,
returnData=FALSE) + theme_bw() + ggtitle(paste("PCA:", title))
}
# Print the plots
qcpca.fn(vsdList[[1]], Aligners[1]) 
qcpca.fn(vsdList[[2]], Aligners[2])
qcpca.fn(vsdList[[3]], Aligners[3]) 
Sample QC: Sample Correlation Heatmap
Identifies distance between samples & correlation in a group
# Heatmap annotation
HeatmapAnno <- metadata[, c("Sample", "Group")]
# Set a function generating a correlation heatmap
cheatmap.fn <- function(df, title) {
# Extract a normalized count matrix
vm <- assay(df)
# Generate a correlation matrix
cm <- cor(vm)
# Generate a heatmap
pheatmap(cm,
annotation=HeatmapAnno,
main=paste("Sample Correlation Heatmap:", title))
}
# Print the heatmaps
cheatmap.fn(vsdList[[1]], Aligners[1])
cheatmap.fn(vsdList[[2]], Aligners[2])
cheatmap.fn(vsdList[[3]], Aligners[3])
Running DE analysis
# Run DESeq
for (x in Aligners) {
ddsList[[x]] <- DESeq(ddsList[[x]])
# Check result names
ResNames <- resultsNames(ddsList[[x]])
print(ResNames)
}## [1] "Intercept" "Group_Covid_vs_Mock"
## [1] "Intercept" "Group_Covid_vs_Mock"
## [1] "Intercept" "Group_Covid_vs_Mock"Creating dispersion plots
- Dispersion is important since estimation by DESeq2 algorithm is based on the assumption that genes with similar expression levels have similar dispersion. If an RNA-seq dataset doesn’t satisfy this assumption, use other DE algorithms than DESeq2.
- References: DESeq2 doc "Dispersion plot and fitting alternatives, Harvard Chan Bioinformatics Core workshop
# Set a function plotting dispersion
dplot.fn <- function(dds, title) {
plotDispEsts(dds,
main=paste("Dispersion over Counts:", title))
}
# Plot dispersion patterns
dplot.fn(ddsList[[1]], Aligners[1])
dplot.fn(ddsList[[2]], Aligners[2])
dplot.fn(ddsList[[3]], Aligners[3])
# Do they fit well with the DESeq2 estimation model?Setting how to extract fold-change results
Change variables below
- The alpha denotes threshold of false discovery rate (FDR) assigned by users.
- In this analysis, the alpha is set to 0.1
# Set FDR threshold alpha
alpha=0.1
# Set the coefficients to compare
Coef <- ResNames[-1]
print(Coef) ## [1] "Group_Covid_vs_Mock"# Set a function to clean a result table
lfctable.fn <- function(df) {
df <- df %>%
rownames_to_column(var="GENEID") %>%
mutate(FDR=ifelse(padj < 0.1 & !is.na(padj),
"< 0.1",
"> 0.1"))
return(df)
}
# Set a function extracting results
extract.lfc.fn <- function(dds) {
res <- results(dds, contrast=Contrast, alpha=alpha)
lfctable.fn(as.data.frame(res))
return(lfctable.fn(as.data.frame(res)))
}Extracting log2FoldChanges
You can change alpha depending on your interest of FDR level
Shrinkage is NOT applied in this analysis
# Initialize a list storing lfc data frames
lfcList <- countList
# Extract DE results
# The Contrast variable was defined in the previous chunk
# Extraction with no shrinkage
# alpha: FDR threshold
for (x in Aligners) {
lfcList[[x]] <- extract.lfc.fn(ddsList[[x]]) %>% mutate(Alignment=x)
print(head(lfcList[[x]]))
}## GENEID baseMean log2FoldChange lfcSE stat pvalue
## 1 ENSG00000000003 7978.6304705 0.001837277 0.1039045 0.01768236 0.98589226
## 2 ENSG00000000005 2.8179041 0.618136403 1.5239193 0.40562280 0.68501977
## 3 ENSG00000000419 900.9751735 -0.196744019 0.1266381 -1.55359294 0.12028154
## 4 ENSG00000000457 598.2936833 0.028644860 0.1403899 0.20403785 0.83832392
## 5 ENSG00000000460 461.5836589 -0.370269993 0.1543873 -2.39831902 0.01647051
## 6 ENSG00000000938 0.1587224 0.974924793 4.0804729 0.23892446 0.81116415
## padj FDR Alignment
## 1 0.99510282 > 0.1 Salmon
## 2 NA > 0.1 Salmon
## 3 0.33184769 > 0.1 Salmon
## 4 0.93983342 > 0.1 Salmon
## 5 0.08055229 < 0.1 Salmon
## 6 NA > 0.1 Salmon
## GENEID baseMean log2FoldChange lfcSE stat pvalue
## 1 ENSG00000223972 16.382284 0.2105319 0.5783491 0.3640221 7.158415e-01
## 2 ENSG00000227232 39.073336 0.2487484 0.3713604 0.6698301 5.029661e-01
## 3 ENSG00000278267 0.000000 NA NA NA NA
## 4 ENSG00000243485 6.640203 0.5409279 0.8752465 0.6180293 5.365560e-01
## 5 ENSG00000284332 0.000000 NA NA NA NA
## 6 ENSG00000237613 202.330477 1.5163697 0.2143040 7.0757887 1.486011e-12
## padj FDR Alignment
## 1 8.876923e-01 > 0.1 STAR
## 2 7.609714e-01 > 0.1 STAR
## 3 NA > 0.1 STAR
## 4 NA > 0.1 STAR
## 5 NA > 0.1 STAR
## 6 1.128834e-10 < 0.1 STAR
## GENEID baseMean log2FoldChange lfcSE stat pvalue
## 1 ENSG00000223972 12.134455 0.42992171 0.6624624 0.64897530 5.163543e-01
## 2 ENSG00000227232 47.652923 -0.02201754 0.3417785 -0.06442051 9.486354e-01
## 3 ENSG00000278267 0.000000 NA NA NA NA
## 4 ENSG00000243485 4.601038 0.83527457 1.0474104 0.79746639 4.251802e-01
## 5 ENSG00000284332 0.000000 NA NA NA NA
## 6 ENSG00000237613 167.762489 1.55049410 0.2207492 7.02378057 2.159439e-12
## padj FDR Alignment
## 1 7.804067e-01 > 0.1 HISAT2
## 2 9.834913e-01 > 0.1 HISAT2
## 3 NA > 0.1 HISAT2
## 4 NA > 0.1 HISAT2
## 5 NA > 0.1 HISAT2
## 6 1.632049e-10 < 0.1 HISAT2# Initialize a data frame storing total lfc results across the aligners
lfc.dataframe <- lfcList[[1]]
for (x in Aligners[2:length(Aligners)]) {
lfc.dataframe <- rbind(lfc.dataframe,
lfcList[[x]])
}
lfc.dataframe$Alignment <- factor(lfc.dataframe$Alignment,
levels=Aligners)Exploring distribution of false discovery rate (FDR)
Black dashed line: FDR = 0.1
# Plot distribution of FDR
ggplot(lfc.dataframe,
aes(x=padj, y=..count.., color=Alignment)) +
geom_density(size=1) +
theme_bw() +
scale_x_log10() +
ggtitle("Distribution of False Discovery Rate (FDR) by Aligner") +
ylab("Count") +
xlim(0.00001, 1) +
geom_vline(xintercept=alpha,
color="black",
size=1, linetype="dashed") + scale_x_continuous(breaks=seq(0, 1, by=0.1))
Presenting distribution of log2FoldChange
Black: total genes (padj =/= NA)
Colored: genes above or below FDR=0.1
valid.lfc.df <- subset(lfc.dataframe, FDR == paste("<", alpha))
ggplot(valid.lfc.df,
aes(x=log2FoldChange,
y=..count..,
color=Alignment)) +
geom_density(size=1) +
theme_bw() +
geom_vline(xintercept=c(-1, 1),
linetype="dashed", color="black", size=1) +
ggtitle(paste0("Distribution of log2FoldChange Values by Aligner (FDR < ", alpha, ")")) +
ylab("Count") +
xlim(-10, 10) # Change xlim by datatype
Exploring mean-difference with an MA plot
- Reference: DESeq2 doc “MA-plot”
- x-axis: expression level (baseMean))
- y-axis: fold change (log2FoldChange)
- Red dashed lines: log2FoldChange = -1 and 1
# Set ylim: has to adjusted by users depending on data
yl <- c(-12, 12)
# Set min log2 fold change of interest
mLog <- c(-1, 1)
# Create MA plots by Aligner
ggplot(lfc.dataframe, aes(x=baseMean, y=log2FoldChange, color=FDR)) +
geom_point() +
facet_grid(~Alignment) +
scale_x_log10() +
theme_bw() +
scale_color_manual(values=c("blue", "grey")) +
ggtitle(paste("MA plot")) +
ylim(yl[1], yl[2]) +
theme(strip.text.x=element_text(size=10)) +
geom_hline(yintercept=c(mLog[1], mLog[2]),
linetype="dashed", color="red") 
Exploring expression profiling with normalized count data
- Normalized count matrices are extracted from dds objects and filtered with thresholds set at FDR and log2FoldChange
- The heatmaps display z-scores of the normalized counts
- In this analysis, mLog = 1
- References: Harvard Chan Bioinformatics Core workshop, DESeq2 doc “Heatmap of the count matrix”
# Initialize a list
heatmap.df.List <- lfcList
# Filter genes with FDR < alpha and absolute log2FoldChange > 1
for (x in Aligners) {
# Set a logical vector filtering FDR below alpha
is.fdr.valid <- lfcList[[x]]$FDR == paste("<", alpha)
# Set a logical vector filtering absolute lfc above 1
is.lfc.large <- abs(lfcList[[x]]$log2FoldChange) > mLog[2]
# Extract total normalized counts
norm.counts <- counts(ddsList[[x]], normalized=T)
# Save filtered genes only from the normalized count data
heatmap.df.List[[x]] <- norm.counts[is.fdr.valid & is.lfc.large,]
}
# Explore the cleaned data frames
head(heatmap.df.List[[1]])## Mock-rep1 Mock-rep2 Mock-rep3 SARS-CoV-2-rep1 SARS-CoV-2-rep2
## ENSG00000002746 42.919753 35.23637 27.006584 82.930962 55.73656
## ENSG00000004399 6.392304 12.38035 9.002195 35.961214 26.54122
## ENSG00000005884 61.183477 78.09141 82.145025 330.256045 281.33690
## ENSG00000006327 4.565931 11.42801 15.753840 64.583404 71.66129
## ENSG00000006747 627.358939 690.44234 697.670075 1453.860501 1601.76243
## ENSG00000007001 39.267008 32.37936 34.883504 8.806828 11.94355
## SARS-CoV-2-rep3
## ENSG00000002746 75.28518
## ENSG00000004399 35.19827
## ENSG00000005884 185.76863
## ENSG00000006327 46.93102
## ENSG00000006747 2004.34571
## ENSG00000007001 17.59913head(heatmap.df.List[[2]])## Mock-rep1 Mock-rep2 Mock-rep3 SARS-CoV-2-rep1
## ENSG00000237613 296.941593 294.510344 304.909944 74.09817
## ENSG00000177133 170.718714 143.940747 146.808491 33.01404
## ENSG00000097021 34.506974 35.038208 35.008179 129.85521
## ENSG00000049249 1.816157 14.204679 1.129296 96.10753
## ENSG00000284747 34.506974 40.720080 27.103106 172.40663
## ENSG00000284716 2.724235 5.681872 2.258592 13.93926
## SARS-CoV-2-rep2 SARS-CoV-2-rep3
## ENSG00000237613 129.79225 113.730562
## ENSG00000177133 48.17032 67.650075
## ENSG00000097021 149.86322 86.278357
## ENSG00000049249 104.36903 26.471769
## ENSG00000284747 148.52515 125.495792
## ENSG00000284716 21.40903 7.843487head(heatmap.df.List[[3]])## Mock-rep1 Mock-rep2 Mock-rep3 SARS-CoV-2-rep1 SARS-CoV-2-rep2
## ENSG00000237613 244.74613 244.27485 258.489470 64.00598 108.24497
## ENSG00000177133 163.16409 135.49620 139.875254 32.37084 45.43616
## ENSG00000158286 58.66574 33.39695 40.284073 24.27813 26.72715
## ENSG00000097021 32.08283 32.44275 29.094053 125.80486 134.97212
## ENSG00000049249 0.00000 14.31298 2.238004 93.43402 101.56318
## ENSG00000284747 32.99948 39.12214 22.380041 165.53271 144.32663
## SARS-CoV-2-rep3
## ENSG00000237613 86.81353
## ENSG00000177133 63.40314
## ENSG00000158286 13.65606
## ENSG00000097021 79.98550
## ENSG00000049249 21.45953
## ENSG00000284747 119.97825dim(heatmap.df.List[[1]])## [1] 1084 6dim(heatmap.df.List[[2]])## [1] 1244 6dim(heatmap.df.List[[3]])## [1] 1240 6pheatmap(heatmap.df.List[[3]],
annotation=HeatmapAnno,
scale="row",
show_rownames=F)
# Set a function creating a profiling heatmap
profile.heatmap.fn <- function(df, title) {
pheatmap(df,
annotation=HeatmapAnno,
scale="row",
show_rownames=F,
main=paste("Expression Profiling by", title, "(FDR < 0.1, absolute log2FoldChange > 1)"))
}
# Print the expression heatmaps
profile.heatmap.fn(heatmap.df.List[[Aligners[1]]], Aligners[1])
profile.heatmap.fn(heatmap.df.List[[Aligners[2]]], Aligners[2])
profile.heatmap.fn(heatmap.df.List[[Aligners[3]]], Aligners[3])
NA statistics: zero count genes & outlier genes
When NAs appear in
- log2FoldChange: zero counts in all samples
- padj: too little information
- pval & padj: at least one replicate was an outlier
# Count number of NA genes
type=c("Zero Counts", "Outliers", "Total NA Genes")
# Create a data frame storing number of NA genes by type
NA.genes <- lfc.dataframe %>%
group_by(Alignment) %>%
summarize(zero=sum(is.na(log2FoldChange)),
outlier=sum(is.na(pvalue) & is.na(padj))) %>%
mutate(total=zero + outlier) %>%
gather(Type, Number, -Alignment) %>%
mutate(Type=factor(case_when(Type == "zero" ~ type[1],
Type == "outlier" ~ type[2],
Type == "total" ~ type[3]),
levels=type))
# Plot number of NA genes
ggplot(NA.genes,
aes(x=Type, y=Number, group=Alignment, fill=Alignment, label=Number)) +
geom_bar(stat="identity", position="dodge") +
theme_bw() +
geom_text(position=position_dodge(width=1), vjust=1.5) +
ggtitle("Number of NA Genes") +
ylab("Number of Genes")
baseMean/LFC/FDR comparison between aligners
# Create a data frame storing the number of transcripts by gene id
AnnoDb.ntrans <- AnnoDb %>%
group_by(GENEID) %>%
summarize(num.trans=n_distinct(TXID))
# Create an empty list storing significant gene lfc tables
sigList <- list()
# Filter significant genes' lfc and save in the list
for (x in Aligners) {
sigList[[x]] <- subset(lfcList[[x]], FDR == paste("<", alpha))
}
# Create a vector storing column names
c_names <- colnames(sigList[[1]])[-1]
c_names <- c("GENEID",
paste0(c_names, "_", Aligners[1]),
paste0(c_names, "_", Aligners[2]),
paste0(c_names, "_", Aligners[3]))
# Join tables by GENEID
lfcTable <- sigList[[1]] %>%
inner_join(sigList[[2]], by="GENEID") %>%
inner_join(sigList[[3]], by="GENEID")
# Rename the columns
names(lfcTable) <- c_names
# Calculate differences
lfcTable <- lfcTable %>%
mutate(mean_SA_ST=baseMean_Salmon - baseMean_STAR,
mean_SA_HI=baseMean_Salmon - baseMean_HISAT2,
mean_ST_HI=baseMean_STAR - baseMean_HISAT2,
lfc_SA_ST=log2FoldChange_Salmon - log2FoldChange_STAR,
lfc_SA_HI=log2FoldChange_Salmon - log2FoldChange_HISAT2,
lfc_ST_HI=log2FoldChange_STAR - log2FoldChange_HISAT2,
FDR_SA_ST=padj_Salmon - padj_STAR,
FDR_SA_HI=padj_Salmon - padj_HISAT2,
FDR_ST_HI=padj_STAR - padj_HISAT2) %>%
left_join(AnnoDb.ntrans, by="GENEID")
# Set a function to create a vector storing plot labels
plotlabels.fn <- function(myvec, mylist, num) {
vec <- c()
for (i in 1:num) {
vec <- c(vec, c(myvec[i], rep("", nrow(mylist[[i]]) - 1)))
}
return(vec)
}
# Explore the output table
head(lfcTable)## GENEID baseMean_Salmon log2FoldChange_Salmon lfcSE_Salmon
## 1 ENSG00000001084 1587.7857 0.5853638 0.1350708
## 2 ENSG00000001497 685.4758 -0.3467204 0.1440032
## 3 ENSG00000001561 2240.0327 0.6073274 0.1311473
## 4 ENSG00000002746 53.1859 -1.0269975 0.3628482
## 5 ENSG00000002834 1075.5410 -0.6594280 0.1275030
## 6 ENSG00000003393 2980.8300 -0.3125891 0.1081754
## stat_Salmon pvalue_Salmon padj_Salmon FDR_Salmon Alignment_Salmon
## 1 4.333754 1.465878e-05 2.334551e-04 < 0.1 Salmon
## 2 -2.407727 1.605219e-02 7.910015e-02 < 0.1 Salmon
## 3 4.630878 3.641179e-06 6.871668e-05 < 0.1 Salmon
## 4 -2.830378 4.649307e-03 3.015041e-02 < 0.1 Salmon
## 5 -5.171864 2.317703e-07 6.121000e-06 < 0.1 Salmon
## 6 -2.889651 3.856695e-03 2.593355e-02 < 0.1 Salmon
## baseMean_STAR log2FoldChange_STAR lfcSE_STAR stat_STAR pvalue_STAR
## 1 1579.75977 0.5664292 0.1342064 4.220584 2.436705e-05
## 2 726.26711 -0.3417999 0.1371200 -2.492707 1.267735e-02
## 3 2273.37550 0.5989872 0.1297204 4.617524 3.883459e-06
## 4 58.72536 -1.0444676 0.3265005 -3.198977 1.379162e-03
## 5 932.70171 -0.6567112 0.1267828 -5.179814 2.221074e-07
## 6 3143.99551 -0.3221310 0.1063918 -3.027779 2.463580e-03
## padj_STAR FDR_STAR Alignment_STAR baseMean_HISAT2 log2FoldChange_HISAT2
## 1 3.973616e-04 < 0.1 STAR 1519.05864 0.5833814
## 2 6.833087e-02 < 0.1 STAR 687.30008 -0.3278163
## 3 7.878088e-05 < 0.1 STAR 2236.78012 0.5980731
## 4 1.189267e-02 < 0.1 STAR 57.00722 -1.0240761
## 5 6.212536e-06 < 0.1 STAR 895.53964 -0.6698121
## 6 1.904315e-02 < 0.1 STAR 3047.53624 -0.3097336
## lfcSE_HISAT2 stat_HISAT2 pvalue_HISAT2 padj_HISAT2 FDR_HISAT2
## 1 0.1317808 4.426908 9.559346e-06 1.804589e-04 < 0.1
## 2 0.1383529 -2.369421 1.781595e-02 9.157123e-02 < 0.1
## 3 0.1303310 4.588880 4.456302e-06 9.161883e-05 < 0.1
## 4 0.3277511 -3.124554 1.780749e-03 1.523395e-02 < 0.1
## 5 0.1266770 -5.287558 1.239603e-07 3.828322e-06 < 0.1
## 6 0.1062535 -2.915043 3.556398e-03 2.650504e-02 < 0.1
## Alignment_HISAT2 mean_SA_ST mean_SA_HI mean_ST_HI lfc_SA_ST lfc_SA_HI
## 1 HISAT2 8.025889 68.727024 60.70114 0.018934584 0.001982376
## 2 HISAT2 -40.791314 -1.824283 38.96703 -0.004920541 -0.018904180
## 3 HISAT2 -33.342767 3.252613 36.59538 0.008340129 0.009254245
## 4 HISAT2 -5.539464 -3.821324 1.71814 0.017470176 -0.002921357
## 5 HISAT2 142.839305 180.001381 37.16208 -0.002716743 0.010384170
## 6 HISAT2 -163.165542 -66.706268 96.45927 0.009541858 -0.002855531
## lfc_ST_HI FDR_SA_ST FDR_SA_HI FDR_ST_HI num.trans
## 1 -0.0169522076 -1.639066e-04 5.299613e-05 2.169027e-04 14
## 2 -0.0139836398 1.076927e-02 -1.247108e-02 -2.324035e-02 25
## 3 0.0009141155 -1.006420e-05 -2.290216e-05 -1.283796e-05 1
## 4 -0.0203915329 1.825774e-02 1.491646e-02 -3.341288e-03 11
## 5 0.0131009125 -9.153651e-08 2.292678e-06 2.384215e-06 9
## 6 -0.0123973888 6.890397e-03 -5.714961e-04 -7.461893e-03 75dim(lfcTable)## [1] 3590 35my.param <- c("baseMean", "log2FoldChange", "padj")
# Slice and clean the data frame for input
lfcTable.comp <- lfcTable %>%
dplyr::select(GENEID, num.trans, starts_with(my.param)) %>%
gather(Category, Value, -GENEID, -num.trans) %>%
separate(Category, c("Metric", "Aligner"), sep="_") %>% pivot_wider(names_from=Aligner, values_from=Value) %>%
group_by(Metric) %>%
nest() %>%
# Calculate correlation coefficients between aligners by metric
mutate(salmon.star.corr=map_dbl(data, ~ cor(.x$Salmon, .x$STAR)),
salmon.hisat.corr=map_dbl(data, ~ cor(.x$Salmon, .x$HISAT2)),
star.hisat.corr=map_dbl(data, ~ cor(.x$STAR, .x$HISAT2)))
# Explore the cleaned data frame
lfcTable.comp## # A tibble: 3 x 5
## # Groups: Metric [3]
## Metric data salmon.star.corr salmon.hisat.co… star.hisat.corr
## <chr> <list> <dbl> <dbl> <dbl>
## 1 baseMean <tibble [3,590… 0.994 0.994 1.00
## 2 log2FoldCha… <tibble [3,590… 0.994 0.995 0.999
## 3 padj <tibble [3,590… 0.863 0.870 0.964lfcTable.comp$data## [[1]]
## # A tibble: 3,590 x 5
## GENEID num.trans Salmon STAR HISAT2
## <chr> <int> <dbl> <dbl> <dbl>
## 1 ENSG00000001084 14 1588. 1580. 1519.
## 2 ENSG00000001497 25 685. 726. 687.
## 3 ENSG00000001561 1 2240. 2273. 2237.
## 4 ENSG00000002746 11 53.2 58.7 57.0
## 5 ENSG00000002834 9 1076. 933. 896.
## 6 ENSG00000003393 75 2981. 3144. 3048.
## 7 ENSG00000003756 26 7190. 5578. 5374.
## 8 ENSG00000004399 17 20.9 23.8 21.9
## 9 ENSG00000004700 8 2989. 1644. 1593.
## 10 ENSG00000004799 5 105. 108. 107.
## # … with 3,580 more rows
##
## [[2]]
## # A tibble: 3,590 x 5
## GENEID num.trans Salmon STAR HISAT2
## <chr> <int> <dbl> <dbl> <dbl>
## 1 ENSG00000001084 14 0.585 0.566 0.583
## 2 ENSG00000001497 25 -0.347 -0.342 -0.328
## 3 ENSG00000001561 1 0.607 0.599 0.598
## 4 ENSG00000002746 11 -1.03 -1.04 -1.02
## 5 ENSG00000002834 9 -0.659 -0.657 -0.670
## 6 ENSG00000003393 75 -0.313 -0.322 -0.310
## 7 ENSG00000003756 26 0.269 0.258 0.261
## 8 ENSG00000004399 17 -1.82 -2.00 -1.85
## 9 ENSG00000004700 8 -0.394 -0.405 -0.393
## 10 ENSG00000004799 5 0.884 0.886 0.906
## # … with 3,580 more rows
##
## [[3]]
## # A tibble: 3,590 x 5
## GENEID num.trans Salmon STAR HISAT2
## <chr> <int> <dbl> <dbl> <dbl>
## 1 ENSG00000001084 14 0.000233 0.000397 0.000180
## 2 ENSG00000001497 25 0.0791 0.0683 0.0916
## 3 ENSG00000001561 1 0.0000687 0.0000788 0.0000916
## 4 ENSG00000002746 11 0.0302 0.0119 0.0152
## 5 ENSG00000002834 9 0.00000612 0.00000621 0.00000383
## 6 ENSG00000003393 75 0.0259 0.0190 0.0265
## 7 ENSG00000003756 26 0.0606 0.0795 0.0754
## 8 ENSG00000004399 17 0.0110 0.00102 0.00441
## 9 ENSG00000004700 8 0.0176 0.0161 0.0211
## 10 ENSG00000004799 5 0.0175 0.0102 0.00881
## # … with 3,580 more rows# Prep vectors storing the correlation coefficient without duplication by comparison
Rsquared.salmon.star <- plotlabels.fn(lfcTable.comp$salmon.star.corr,
lfcTable.comp$data,
nrow(lfcTable.comp))
Rsquared.salmon.hisat <- plotlabels.fn(lfcTable.comp$salmon.hisat.corr,
lfcTable.comp$data,
nrow(lfcTable.comp))
Rsquared.star.hisat <- plotlabels.fn(lfcTable.comp$star.hisat.corr,
lfcTable.comp$data,
nrow(lfcTable.comp))
# Unnest the data frame and add columns storing correlation coefficients each
lfcTable.comp <- lfcTable.comp %>%
unnest(data)
head(lfcTable.comp)## # A tibble: 6 x 9
## # Groups: Metric [1]
## Metric GENEID num.trans Salmon STAR HISAT2 salmon.star.corr salmon.hisat.co…
## <chr> <chr> <int> <dbl> <dbl> <dbl> <dbl> <dbl>
## 1 baseM… ENSG0… 14 1588. 1580. 1519. 0.994 0.994
## 2 baseM… ENSG0… 25 685. 726. 687. 0.994 0.994
## 3 baseM… ENSG0… 1 2240. 2273. 2237. 0.994 0.994
## 4 baseM… ENSG0… 11 53.2 58.7 57.0 0.994 0.994
## 5 baseM… ENSG0… 9 1076. 933. 896. 0.994 0.994
## 6 baseM… ENSG0… 75 2981. 3144. 3048. 0.994 0.994
## # … with 1 more variable: star.hisat.corr <dbl>lfcTable.comp$Rsquared.salmon.star <- Rsquared.salmon.star
lfcTable.comp$Rsquared.salmon.hisat <- Rsquared.salmon.hisat
lfcTable.comp$Rsquared.star.hisat <- Rsquared.star.hisat
# Explore the data frame
head(lfcTable.comp)## # A tibble: 6 x 12
## # Groups: Metric [1]
## Metric GENEID num.trans Salmon STAR HISAT2 salmon.star.corr salmon.hisat.co…
## <chr> <chr> <int> <dbl> <dbl> <dbl> <dbl> <dbl>
## 1 baseM… ENSG0… 14 1588. 1580. 1519. 0.994 0.994
## 2 baseM… ENSG0… 25 685. 726. 687. 0.994 0.994
## 3 baseM… ENSG0… 1 2240. 2273. 2237. 0.994 0.994
## 4 baseM… ENSG0… 11 53.2 58.7 57.0 0.994 0.994
## 5 baseM… ENSG0… 9 1076. 933. 896. 0.994 0.994
## 6 baseM… ENSG0… 75 2981. 3144. 3048. 0.994 0.994
## # … with 4 more variables: star.hisat.corr <dbl>, Rsquared.salmon.star <chr>,
## # Rsquared.salmon.hisat <chr>, Rsquared.star.hisat <chr># Nest the data frame by Metric
lfcTable.comp <- lfcTable.comp %>%
group_by(Metric) %>%
nest()
# Explore the data frame
lfcTable.comp ## # A tibble: 3 x 2
## # Groups: Metric [3]
## Metric data
## <chr> <list>
## 1 baseMean <tibble [3,590 × 11]>
## 2 log2FoldChange <tibble [3,590 × 11]>
## 3 padj <tibble [3,590 × 11]>lfcTable.comp$data## [[1]]
## # A tibble: 3,590 x 11
## GENEID num.trans Salmon STAR HISAT2 salmon.star.corr salmon.hisat.co…
## <chr> <int> <dbl> <dbl> <dbl> <dbl> <dbl>
## 1 ENSG0000000… 14 1588. 1580. 1519. 0.994 0.994
## 2 ENSG0000000… 25 685. 726. 687. 0.994 0.994
## 3 ENSG0000000… 1 2240. 2273. 2237. 0.994 0.994
## 4 ENSG0000000… 11 53.2 58.7 57.0 0.994 0.994
## 5 ENSG0000000… 9 1076. 933. 896. 0.994 0.994
## 6 ENSG0000000… 75 2981. 3144. 3048. 0.994 0.994
## 7 ENSG0000000… 26 7190. 5578. 5374. 0.994 0.994
## 8 ENSG0000000… 17 20.9 23.8 21.9 0.994 0.994
## 9 ENSG0000000… 8 2989. 1644. 1593. 0.994 0.994
## 10 ENSG0000000… 5 105. 108. 107. 0.994 0.994
## # … with 3,580 more rows, and 4 more variables: star.hisat.corr <dbl>,
## # Rsquared.salmon.star <chr>, Rsquared.salmon.hisat <chr>,
## # Rsquared.star.hisat <chr>
##
## [[2]]
## # A tibble: 3,590 x 11
## GENEID num.trans Salmon STAR HISAT2 salmon.star.corr salmon.hisat.co…
## <chr> <int> <dbl> <dbl> <dbl> <dbl> <dbl>
## 1 ENSG0000000… 14 0.585 0.566 0.583 0.994 0.995
## 2 ENSG0000000… 25 -0.347 -0.342 -0.328 0.994 0.995
## 3 ENSG0000000… 1 0.607 0.599 0.598 0.994 0.995
## 4 ENSG0000000… 11 -1.03 -1.04 -1.02 0.994 0.995
## 5 ENSG0000000… 9 -0.659 -0.657 -0.670 0.994 0.995
## 6 ENSG0000000… 75 -0.313 -0.322 -0.310 0.994 0.995
## 7 ENSG0000000… 26 0.269 0.258 0.261 0.994 0.995
## 8 ENSG0000000… 17 -1.82 -2.00 -1.85 0.994 0.995
## 9 ENSG0000000… 8 -0.394 -0.405 -0.393 0.994 0.995
## 10 ENSG0000000… 5 0.884 0.886 0.906 0.994 0.995
## # … with 3,580 more rows, and 4 more variables: star.hisat.corr <dbl>,
## # Rsquared.salmon.star <chr>, Rsquared.salmon.hisat <chr>,
## # Rsquared.star.hisat <chr>
##
## [[3]]
## # A tibble: 3,590 x 11
## GENEID num.trans Salmon STAR HISAT2 salmon.star.corr salmon.hisat.co…
## <chr> <int> <dbl> <dbl> <dbl> <dbl> <dbl>
## 1 ENSG000… 14 2.33e-4 3.97e-4 1.80e-4 0.863 0.870
## 2 ENSG000… 25 7.91e-2 6.83e-2 9.16e-2 0.863 0.870
## 3 ENSG000… 1 6.87e-5 7.88e-5 9.16e-5 0.863 0.870
## 4 ENSG000… 11 3.02e-2 1.19e-2 1.52e-2 0.863 0.870
## 5 ENSG000… 9 6.12e-6 6.21e-6 3.83e-6 0.863 0.870
## 6 ENSG000… 75 2.59e-2 1.90e-2 2.65e-2 0.863 0.870
## 7 ENSG000… 26 6.06e-2 7.95e-2 7.54e-2 0.863 0.870
## 8 ENSG000… 17 1.10e-2 1.02e-3 4.41e-3 0.863 0.870
## 9 ENSG000… 8 1.76e-2 1.61e-2 2.11e-2 0.863 0.870
## 10 ENSG000… 5 1.75e-2 1.02e-2 8.81e-3 0.863 0.870
## # … with 3,580 more rows, and 4 more variables: star.hisat.corr <dbl>,
## # Rsquared.salmon.star <chr>, Rsquared.salmon.hisat <chr>,
## # Rsquared.star.hisat <chr># Set a function creating a scatter plot
comp.scatter.fn <- function(df,
xvar,
yvar,
label,
metric,
xlab, ylab,
xlog=F,
ylog=F) {
p <- ggplot(df, aes(x=xvar, y=yvar, color=log(num.trans), label=label)) +
geom_point(alpha=0.5) +
theme_bw() +
geom_text(size=5,
mapping=aes(x=Inf, y=Inf),
vjust=2, hjust=1.2, color="black") +
geom_abline(slope=1, size=0.5, linetype="dashed", color="black") +
ggtitle(paste("Comparison in", metric, "\n(with R-Squared)")) + scale_color_gradient(low="blue", high="red") +
xlab(xlab) +
ylab(ylab)
if (xlog) {
p <- p +
scale_x_log10()
}
if (ylog) {
p <- p + scale_y_log10()
}
return(p)
}# Create and add the scatter plots with or without logarithmic transformation of
# x/y scales
lfcTable.comp <- lfcTable.comp %>%
# Add scatter plots to the data frame:
#
# without log transformation of x and y scales
mutate(salmon.star=map(data,
~ comp.scatter.fn(.x, .x$Salmon, .x$STAR,
.x$Rsquared.salmon.star, Metric,
"Salmon", "STAR")),
salmon.hisat=map(data, ~ comp.scatter.fn(.x,
.x$Salmon,
.x$HISAT2,
.x$Rsquared.salmon.hisat,
Metric,
"Salmon", "HISAT2")),
star.hisat=map(data, ~ comp.scatter.fn(.x,
.x$STAR,
.x$HISAT2,
.x$Rsquared.star.hisat,
Metric,
"STAR", "HISAT2")),
# with log transformation of x and y scales
salmon.star.log=map(data,
~ comp.scatter.fn(.x, .x$Salmon, .x$STAR,
.x$Rsquared.salmon.star, Metric,
"Salmon", "STAR",
T, T)),
salmon.hisat.log=map(data, ~ comp.scatter.fn(.x,
.x$Salmon,
.x$HISAT2,
.x$Rsquared.salmon.hisat,
Metric,
"Salmon", "HISAT2",
T, T)),
star.hisat.log=map(data, ~ comp.scatter.fn(.x,
.x$STAR,
.x$HISAT2,
.x$Rsquared.star.hisat,
Metric,
"STAR", "HISAT2",
T, T)))
# Set a function simplifying grid.arrange() function
gr.ar.fn0 <- function(pl1, pl2, pl3) {
grid.arrange(pl1, pl2, pl3, ncol=1)
}
# Print the plots
for (i in 1:length(my.param)) {
p1 <- gr.ar.fn0(lfcTable.comp$salmon.star[[i]],
lfcTable.comp$salmon.hisat[[i]],
lfcTable.comp$star.hisat[[i]])
p2 <- gr.ar.fn0(lfcTable.comp$salmon.star.log[[i]],
lfcTable.comp$salmon.hisat.log[[i]],
lfcTable.comp$star.hisat.log[[i]])
print(grid.arrange(p1, p2, nrow=1))
}
## TableGrob (1 x 2) "arrange": 2 grobs
## z cells name grob
## 1 1 (1-1,1-1) arrange gtable[arrange]
## 2 2 (1-1,2-2) arrange gtable[arrange]
## TableGrob (1 x 2) "arrange": 2 grobs
## z cells name grob
## 1 1 (1-1,1-1) arrange gtable[arrange]
## 2 2 (1-1,2-2) arrange gtable[arrange]
## TableGrob (1 x 2) "arrange": 2 grobs
## z cells name grob
## 1 1 (1-1,1-1) arrange gtable[arrange]
## 2 2 (1-1,2-2) arrange gtable[arrange]Relationship between baseMean/log2FoldChange/padj with the number of alternative transcripts
- Variables of interest: baseMean, log2FoldChange, and padj
- ANOVA: tests whether the the variable is significantly different by Aligner
# Slice the data frame
lfcTable.rel <- lfcTable %>%
dplyr::select(starts_with(c(my.param, "num.")))
# Set a function cleaning my data frame
gather.fn <- function(word) {
gather(lfcTable.rel, Group, Value, starts_with(word)) %>%
dplyr::select(Group, Value, num.trans)
}
# Set a function creating a boxplot
boxplot1.fn <- function(metric, ylog=F) {
df <- subset(lfcTable.rela, Metric == metric)
df$Aligner <- factor(df$Aligner, levels=Aligners)
p <- ggplot(df,
aes(x= Aligner, y=Value, fill=Aligner, label=ANOVA.pval)) +
geom_boxplot(alpha=0.5) +
theme_bw() +
xlab("Aligner") +
ylab("Value") +
theme(strip.text.x=element_text(size=10)) +
ggtitle(paste("Aligner Comparison in",
metric,
"\n(P-value from Two-Tailed ANOVA Test)")) + ylab(metric) +
geom_text(size=5, mapping=aes(x=Inf, y=Inf), vjust=2, hjust=1.2)
if (ylog) {
p <- p + scale_y_log10()
}
return(p)
}
# Clean the data frame
lfcTable.rela <- rbind(gather.fn("base"),
gather.fn("log2"),
gather.fn("padj")) %>%
separate(Group, c("Metric", "Aligner"), sep="_") %>%
# Nest by Metric
group_by(Metric) %>%
nest() %>%
# Add columns storing:
# 1. linear regression model
# 2. summary of the model
# 3. R-squared extracted from the model
# 4. ANOVA test
# 5. p-values extracted from the ANOVA objects
mutate(Model=map(data, ~ lm(Value ~ num.trans, data=.x)),
Model_Summary=map(Model, ~ summary(.x)),
Rsquared=map_dbl(Model_Summary, ~ .x$r.squared),
ANOVA=map(data, ~ unlist(summary(aov(Value ~ Aligner, data=.x)))),
ANOVA.pval=map_dbl(ANOVA, ~ round(.x["Pr(>F)1"], 9)))
# Create a vector storing p-values which will be used in plotting
ANOVA.pval <- plotlabels.fn(lfcTable.rela$ANOVA.pval,
lfcTable.rela$data,
nrow(lfcTable.rela))
# Unnest
lfcTable.rela <- lfcTable.rela %>%
unnest(data)
# Add a column storing previously created p-value vector
lfcTable.rela$ANOVA.pval <- ANOVA.pval
# Plot
boxplot1.fn("baseMean", T) 
boxplot1.fn("log2FoldChange", T) 
boxplot1.fn("padj", F)
Difference comparison in baseMean/LFC/FDR between Aligners
# Assign names of the list
col.of.int <- c("Subtraction", "Difference")
# Slice and clean the data frame
lfcTable.diff <- dplyr::select(lfcTable,
starts_with(c("mean_",
"lfc_",
"FDR_"))) %>%
dplyr::select(-ends_with(c("Salmon", "STAR", "HISAT2")))
# Create an empty data frame
lfcTable.sub <- data.frame()
# Clean and save in the data frame
for (x in c("mean_", "lfc_", "FDR_")) {
df <- lfcTable.diff %>%
gather(Subtraction, Difference, starts_with(x)) %>%
dplyr::select(col.of.int)
if (x == "mean_") {
lfcTable.sub <- df
} else {
lfcTable.sub <- rbind(lfcTable.sub, df)
}
}
# Explore the output
head(lfcTable.sub)## Subtraction Difference
## 1 mean_SA_ST 8.025889
## 2 mean_SA_ST -40.791314
## 3 mean_SA_ST -33.342767
## 4 mean_SA_ST -5.539464
## 5 mean_SA_ST 142.839305
## 6 mean_SA_ST -163.165542# Rearrange the data frame
lfcTable.sub <- lfcTable.sub %>%
separate(Subtraction, c("Metric", "From", "To"), sep="_") %>%
mutate(Metric=ifelse(Metric == "mean", "baseMean",
ifelse(Metric == "lfc", "log2FoldChange", "padj")),
From=ifelse(From == "SA", "Salmon",
ifelse(From == "ST", "STAR", "HISAT2")),
To=ifelse(To == "SA", "Salmon",
ifelse(To == "ST", "STAR", "HISAT2")),
Subtraction=paste(From, "-", To)) %>%
# Nest by Metric
group_by(Metric) %>%
nest()
# Conduct ANOVA test in the subtraction data
lfcTable.sub <- lfcTable.sub %>%
mutate(ANOVA=map(data, ~aov(Difference ~ Subtraction, data=.x)),
ANOVA.summary=map(ANOVA, ~ unlist(summary(.x))),
ANOVA.pval=map_dbl(ANOVA.summary, ~ .x["Pr(>F)1"]))
# Create a vector storing pvalue labels
sub.ANOVA.pval <- plotlabels.fn(lfcTable.sub$ANOVA.pval,
lfcTable.sub$data,
nrow(lfcTable.sub))
# Unnest the data frame
lfcTable.sub <- lfcTable.sub %>%
unnest(data)
# Add a column storing pvalues
lfcTable.sub$ANOVA.pval <- sub.ANOVA.pval
# Set a function creating a box plot
boxplot2.fn <- function(metric, ylog=F) {
df <- subset(lfcTable.sub, Metric == metric)
p <- ggplot(df,
aes(x= Subtraction, y=abs(Difference),
fill=Subtraction, label=ANOVA.pval)) +
geom_boxplot(alpha=0.5) +
theme_bw() +
xlab("Subtraction") +
ylab("Difference") +
theme(strip.text.x=element_text(size=10)) +
ggtitle(paste("Subtraction Comparison in",
metric,
"\n(P-value from Two-Tailed ANOVA Test)")) +
geom_text(size=5, mapping=aes(x=Inf, y=Inf), vjust=2, hjust=1.2)
if (ylog) {
p <- p + scale_y_log10()
}
return(p)
}
# Print the boxplots comparing subtraction & statistical significance by metric
boxplot2.fn("baseMean", T) 
boxplot2.fn("log2FoldChange", T) 
boxplot2.fn("padj", F) 
Exploration of standard deviation (SD) of baseMean, log2FoldChange, and padj across the alingers
# Create an empty data frame
lfcTable.sd <- data.frame()
for (x in my.param) {
# Slice the data frame with columns of interest
df <- dplyr::select(lfcTable,
starts_with(x))
# Calculate Mean across the aligners
df$Mean <- rowMeans(df)
# Calculate SD across the aligners
df$SD <- apply(df[, 1:3], 1, sd)
# Add a column storing the number of alternative transcripts
df$num.trans <- lfcTable$num.trans
# Change column names
colnames(df) <- str_replace(colnames(df), paste0(x, "_"), "")
# Add a column storing metric
df$Metric <- x
# Save as a data frame
if (x == my.param[1]) {
lfcTable.sd <- df
} else {
lfcTable.sd <- rbind(lfcTable.sd, df)
}
}
# Explore the output data frame
head(lfcTable.sd)## Salmon STAR HISAT2 Mean SD num.trans Metric
## 1 1587.7857 1579.75977 1519.05864 1562.20136 37.577579 14 baseMean
## 2 685.4758 726.26711 687.30008 699.68100 23.042312 25 baseMean
## 3 2240.0327 2273.37550 2236.78012 2250.06278 20.254799 1 baseMean
## 4 53.1859 58.72536 57.00722 56.30616 2.835495 11 baseMean
## 5 1075.5410 932.70171 895.53964 967.92746 95.030332 9 baseMean
## 6 2980.8300 3143.99551 3047.53624 3057.45390 82.033643 75 baseMeandim(lfcTable.sd)## [1] 10770 7# Nest the data frame by Metric
lfcTable.sd <- lfcTable.sd %>%
group_by(Metric) %>%
nest()
# Explore the output data frame
lfcTable.sd ## # A tibble: 3 x 2
## # Groups: Metric [3]
## Metric data
## <chr> <list>
## 1 baseMean <tibble [3,590 × 6]>
## 2 log2FoldChange <tibble [3,590 × 6]>
## 3 padj <tibble [3,590 × 6]># Set a function creating a scatter plot demonstrating SD over the number of alternative transcripts
scatter1.fn <- function(df, mlog=F, ylog=F, metric) {
if (mlog) {
p <- ggplot(df, aes(x=num.trans, y=SD, color=log(Mean)))
} else {
p <- ggplot(df, aes(x=num.trans, y=SD, color=Mean))
}
p <- p +
geom_point(alpha=0.5) +
theme_bw() +
xlab("Number of Transcripts") +
ggtitle(paste("Relationship between",
metric,
"Standard Deviation and\nNumber of Transcripts")) +
scale_color_gradient(low="blue", high="red")
if (ylog) {
p <- p +
scale_y_log10() +
ylab("Log (Standard Deviation)")
} else {
p <- p + ylab("Standard Deviation")
}
return(p)
}
# Create and save the scatter plots
lfcTable.sd <- lfcTable.sd %>%
# sd.plot = No log transformation in the plot
# sd.plot.logMean = log(Mean)
# sd.plot.logY = log(SD),
# sd.plot.logBoth = log(Mean) & log(SD)
mutate(sd.plot=map(data, ~ scatter1.fn(.x, F, F, Metric)),
sd.plot.logMean=map(data, ~ scatter1.fn(.x, T, F, Metric)),
sd.plot.logY=map(data, ~ scatter1.fn(.x, F, T, Metric)),
sd.plot.logBoth=map(data, ~ scatter1.fn(.x, T, T, Metric)))
# Set a function shortening scripts
gr.ar.fn2 <- function(pl1, pl2, pl3) {
grid.arrange(pl1, pl2, pl3, nrow=1)
}
# Explore the plots
gr.ar.fn2(lfcTable.sd$sd.plot[[1]],
lfcTable.sd$sd.plot[[2]],
lfcTable.sd$sd.plot[[3]]) 
gr.ar.fn2(lfcTable.sd$sd.plot.logMean[[1]],
lfcTable.sd$sd.plot.logMean[[2]],
lfcTable.sd$sd.plot.logMean[[3]])
gr.ar.fn2(lfcTable.sd$sd.plot.logY[[1]],
lfcTable.sd$sd.plot.logY[[2]],
lfcTable.sd$sd.plot.logY[[3]])
gr.ar.fn2(lfcTable.sd$sd.plot.logBoth[[1]],
lfcTable.sd$sd.plot.logBoth[[2]],
lfcTable.sd$sd.plot.logBoth[[3]])
# Print the optimal presentation
gr.ar.fn2(lfcTable.sd$sd.plot.logBoth[[1]],
lfcTable.sd$sd.plot.logBoth[[2]],
lfcTable.sd$sd.plot[[3]])
Exploring relationship between difference/percent difference vs the number of alternative transcripts
# Add columns storing percent difference
lfcTable <- lfcTable %>%
# mDiff: difference in meanBase
# lDiff: difference in log2FoldChange
# fDiff: difference in padj (FDR)
mutate(mDiff_percent=100 * mean_SA_ST / (baseMean_Salmon + baseMean_STAR),
lDiff_percent=100 * lfc_SA_ST / (abs(log2FoldChange_Salmon) + abs(log2FoldChange_STAR)),
fDiff_percent=100 * FDR_SA_ST / (padj_Salmon + padj_STAR))
# Explore the output
head(lfcTable)## GENEID baseMean_Salmon log2FoldChange_Salmon lfcSE_Salmon
## 1 ENSG00000001084 1587.7857 0.5853638 0.1350708
## 2 ENSG00000001497 685.4758 -0.3467204 0.1440032
## 3 ENSG00000001561 2240.0327 0.6073274 0.1311473
## 4 ENSG00000002746 53.1859 -1.0269975 0.3628482
## 5 ENSG00000002834 1075.5410 -0.6594280 0.1275030
## 6 ENSG00000003393 2980.8300 -0.3125891 0.1081754
## stat_Salmon pvalue_Salmon padj_Salmon FDR_Salmon Alignment_Salmon
## 1 4.333754 1.465878e-05 2.334551e-04 < 0.1 Salmon
## 2 -2.407727 1.605219e-02 7.910015e-02 < 0.1 Salmon
## 3 4.630878 3.641179e-06 6.871668e-05 < 0.1 Salmon
## 4 -2.830378 4.649307e-03 3.015041e-02 < 0.1 Salmon
## 5 -5.171864 2.317703e-07 6.121000e-06 < 0.1 Salmon
## 6 -2.889651 3.856695e-03 2.593355e-02 < 0.1 Salmon
## baseMean_STAR log2FoldChange_STAR lfcSE_STAR stat_STAR pvalue_STAR
## 1 1579.75977 0.5664292 0.1342064 4.220584 2.436705e-05
## 2 726.26711 -0.3417999 0.1371200 -2.492707 1.267735e-02
## 3 2273.37550 0.5989872 0.1297204 4.617524 3.883459e-06
## 4 58.72536 -1.0444676 0.3265005 -3.198977 1.379162e-03
## 5 932.70171 -0.6567112 0.1267828 -5.179814 2.221074e-07
## 6 3143.99551 -0.3221310 0.1063918 -3.027779 2.463580e-03
## padj_STAR FDR_STAR Alignment_STAR baseMean_HISAT2 log2FoldChange_HISAT2
## 1 3.973616e-04 < 0.1 STAR 1519.05864 0.5833814
## 2 6.833087e-02 < 0.1 STAR 687.30008 -0.3278163
## 3 7.878088e-05 < 0.1 STAR 2236.78012 0.5980731
## 4 1.189267e-02 < 0.1 STAR 57.00722 -1.0240761
## 5 6.212536e-06 < 0.1 STAR 895.53964 -0.6698121
## 6 1.904315e-02 < 0.1 STAR 3047.53624 -0.3097336
## lfcSE_HISAT2 stat_HISAT2 pvalue_HISAT2 padj_HISAT2 FDR_HISAT2
## 1 0.1317808 4.426908 9.559346e-06 1.804589e-04 < 0.1
## 2 0.1383529 -2.369421 1.781595e-02 9.157123e-02 < 0.1
## 3 0.1303310 4.588880 4.456302e-06 9.161883e-05 < 0.1
## 4 0.3277511 -3.124554 1.780749e-03 1.523395e-02 < 0.1
## 5 0.1266770 -5.287558 1.239603e-07 3.828322e-06 < 0.1
## 6 0.1062535 -2.915043 3.556398e-03 2.650504e-02 < 0.1
## Alignment_HISAT2 mean_SA_ST mean_SA_HI mean_ST_HI lfc_SA_ST lfc_SA_HI
## 1 HISAT2 8.025889 68.727024 60.70114 0.018934584 0.001982376
## 2 HISAT2 -40.791314 -1.824283 38.96703 -0.004920541 -0.018904180
## 3 HISAT2 -33.342767 3.252613 36.59538 0.008340129 0.009254245
## 4 HISAT2 -5.539464 -3.821324 1.71814 0.017470176 -0.002921357
## 5 HISAT2 142.839305 180.001381 37.16208 -0.002716743 0.010384170
## 6 HISAT2 -163.165542 -66.706268 96.45927 0.009541858 -0.002855531
## lfc_ST_HI FDR_SA_ST FDR_SA_HI FDR_ST_HI num.trans
## 1 -0.0169522076 -1.639066e-04 5.299613e-05 2.169027e-04 14
## 2 -0.0139836398 1.076927e-02 -1.247108e-02 -2.324035e-02 25
## 3 0.0009141155 -1.006420e-05 -2.290216e-05 -1.283796e-05 1
## 4 -0.0203915329 1.825774e-02 1.491646e-02 -3.341288e-03 11
## 5 0.0131009125 -9.153651e-08 2.292678e-06 2.384215e-06 9
## 6 -0.0123973888 6.890397e-03 -5.714961e-04 -7.461893e-03 75
## mDiff_percent lDiff_percent fDiff_percent
## 1 0.2533788 1.6439226 -25.9832352
## 2 -2.8894293 -0.7146543 7.3046171
## 3 -0.7387492 0.6913727 -6.8233015
## 4 -4.9498713 0.8433729 43.4262817
## 5 7.1126514 -0.2064176 -0.7421757
## 6 -2.6640031 1.5033175 15.3199245dim(lfcTable)## [1] 3590 38# Create an empty data frame
lfcTable.percent <- data.frame()
for (x in my.param) {
init.vec <- c("GENEID", "num.trans")
# Set columns of interest
if (x == my.param[1]) {
col.of.interest <- c(init.vec, "mean_SA_ST", "mDiff_percent")
} else if (x == my.param[2]) {
col.of.interest <- c(init.vec, "lfc_SA_ST", "lDiff_percent")
} else {
col.of.interest <- c(init.vec, "FDR_SA_ST", "fDiff_percent")
}
# Trim the table
df <- lfcTable[, colnames(lfcTable) %in% col.of.interest] %>%
mutate(Metric=x) %>%
dplyr::rename(Difference=ends_with("ST"),
Percent=ends_with("percent"))
# Save in the empty data frame
if (x == my.param[1]) {
lfcTable.percent <- df
} else {
lfcTable.percent <- rbind(lfcTable.percent, df)
}
}
# Explore the output
head(lfcTable.percent)## GENEID Difference num.trans Percent Metric
## 1 ENSG00000001084 8.025889 14 0.2533788 baseMean
## 2 ENSG00000001497 -40.791314 25 -2.8894293 baseMean
## 3 ENSG00000001561 -33.342767 1 -0.7387492 baseMean
## 4 ENSG00000002746 -5.539464 11 -4.9498713 baseMean
## 5 ENSG00000002834 142.839305 9 7.1126514 baseMean
## 6 ENSG00000003393 -163.165542 75 -2.6640031 baseMeandim(lfcTable.percent)## [1] 10770 5# Nest the data frame by Metric
lfcTable.percent <- lfcTable.percent %>%
group_by(Metric) %>%
nest()
# Explore the output
lfcTable.percent## # A tibble: 3 x 2
## # Groups: Metric [3]
## Metric data
## <chr> <list>
## 1 baseMean <tibble [3,590 × 4]>
## 2 log2FoldChange <tibble [3,590 × 4]>
## 3 padj <tibble [3,590 × 4]>head(lfcTable.percent$data[[1]])## # A tibble: 6 x 4
## GENEID Difference num.trans Percent
## <chr> <dbl> <int> <dbl>
## 1 ENSG00000001084 8.03 14 0.253
## 2 ENSG00000001497 -40.8 25 -2.89
## 3 ENSG00000001561 -33.3 1 -0.739
## 4 ENSG00000002746 -5.54 11 -4.95
## 5 ENSG00000002834 143. 9 7.11
## 6 ENSG00000003393 -163. 75 -2.66# Calculate correlation (Rsquared)
# DvsP: Percent Difference vs Difference
# DvsT: Difference vs Number of Transcripts
# PvsT: Percent Difference vs Number of Transcripts
lfcTable.percent <- lfcTable.percent %>%
mutate(DvsP.mod=map(data, ~ lm(Percent ~ Difference, data=.x)),
DvsP.rsq=map_dbl(DvsP.mod, ~ summary(.x)$r.squared),
DvsT.mod=map(data, ~ lm(Difference ~ num.trans, data=.x)),
DvsT.rsq=map_dbl(DvsT.mod, ~ summary(.x)$r.squared),
PvsT.mod=map(data, ~ lm(Percent ~ num.trans, data=.x)),
PvsT.rsq=map_dbl(PvsT.mod, ~ summary(.x)$r.squared))
# Add Rsquard values to the data frame as plot label columns
DvsP.r <- plotlabels.fn(lfcTable.percent$DvsP.rsq,
lfcTable.percent$data,
nrow(lfcTable.percent))
DvsT.r <- plotlabels.fn(lfcTable.percent$DvsT.rsq,
lfcTable.percent$data,
nrow(lfcTable.percent))
PvsT.r <- plotlabels.fn(lfcTable.percent$PvsT.rsq,
lfcTable.percent$data,
nrow(lfcTable.percent))
lfcTable.percent <- lfcTable.percent %>%
unnest(data)
lfcTable.percent$DvsP.Rsquared <- DvsP.r
lfcTable.percent$DvsT.Rsquared <- DvsT.r
lfcTable.percent$PvsT.Rsquared <- PvsT.r
# Explore the output data frame
head(lfcTable.percent)## # A tibble: 6 x 14
## # Groups: Metric [1]
## Metric GENEID Difference num.trans Percent DvsP.mod DvsP.rsq DvsT.mod DvsT.rsq
## <chr> <chr> <dbl> <int> <dbl> <list> <dbl> <list> <dbl>
## 1 baseM… ENSG0… 8.03 14 0.253 <lm> 0.0396 <lm> 0.000269
## 2 baseM… ENSG0… -40.8 25 -2.89 <lm> 0.0396 <lm> 0.000269
## 3 baseM… ENSG0… -33.3 1 -0.739 <lm> 0.0396 <lm> 0.000269
## 4 baseM… ENSG0… -5.54 11 -4.95 <lm> 0.0396 <lm> 0.000269
## 5 baseM… ENSG0… 143. 9 7.11 <lm> 0.0396 <lm> 0.000269
## 6 baseM… ENSG0… -163. 75 -2.66 <lm> 0.0396 <lm> 0.000269
## # … with 5 more variables: PvsT.mod <list>, PvsT.rsq <dbl>,
## # DvsP.Rsquared <chr>, DvsT.Rsquared <chr>, PvsT.Rsquared <chr># Set a function creating scatter plot
scatter2.fn <- function(label.col, xtitle, ytitle, title, ylog=F, xlog=F, label=F) {
p <- ggplot(lfcTable.percent) +
theme_bw() +
scale_color_gradient(low="blue", high="red") +
facet_wrap(~Metric, scales = "free") +
theme(strip.text.x=element_text(size=10)) +
ggtitle(paste(title, "in Salmon vs STAR")) +
xlab(xtitle) +
ylab(ytitle)
if (ylog) {
p <- p + scale_y_log10() + ylab(paste0("Log (", ytitle, ")"))
}
if (xlog) {
p <- p + scale_x_log10() + xlab(paste0("Log (", xtitle, ")"))
}
if (label) {
p <- p + geom_text(data=lfcTable.percent,
size=5,
mapping=aes(label=label.col, x=Inf, y=Inf),
vjust=2, hjust=1.1, color="black") +
ggtitle(paste(title, "in Salmon vs STAR", "(with R-Squared)"))
}
return(p)
}
# Create and save the plots
# P1 & 2: D vs P with or without log transformation of x values
# P3 & 4: P vs T with or without log transformation of y values
# P5 & 6: D vs T with or without log transformation of y values
p1 <- scatter2.fn(lfcTable.percent$DvsP.Rsquared,
"Salmon - STAR",
"100 x (Salmon - STAR) / (Salmon + STAR)",
"Difference vs Percent Difference", label=T) +
geom_point(data=lfcTable.percent, alpha=0.5,
aes(x=abs(Difference), y=abs(Percent), color=log(num.trans)))
p2 <- scatter2.fn(lfcTable.percent$DvsP.Rsquared,
"Salmon - STAR",
"100 x (Salmon - STAR) / (Salmon + STAR)",
"Difference vs Percent Difference",
xlog=T) +
geom_point(data=lfcTable.percent, alpha=0.5,
aes(x=abs(Difference), y=abs(Percent), color=log(num.trans)))
p3 <- scatter2.fn(lfcTable.percent$PvsT.Rsquared,
"Number of Alternative Transcripts",
"100 x (Salmon - STAR) / (Salmon + STAR)",
"Percent Difference vs Number of Alternative Transcripts",
label=T) +
geom_point(data=lfcTable.percent, alpha=0.5,
aes(x=num.trans, y=abs(Percent)))
p4 <- scatter2.fn(lfcTable.percent$PvsT.Rsquared,
"Number of Alternative Transcripts",
"100 x (Salmon - STAR) / (Salmon + STAR)",
"Percent Difference vs Number of Alternative Transcripts",
ylog=T) +
geom_point(data=lfcTable.percent, alpha=0.5,
aes(x=num.trans, y=abs(Percent)))
p5 <- scatter2.fn(lfcTable.percent$DvsT.Rsquared,
"Number of Alternative Transcripts",
"Salmon - STAR",
"Difference vs Number of Alternative Transcripts",
label=T) +
geom_point(data=lfcTable.percent, alpha=0.5,
aes(x=num.trans, y=abs(Difference)))
p6 <- scatter2.fn(lfcTable.percent$DvsT.Rsquared,
"Number of Alternative Transcripts",
"Salmon - STAR",
"Difference vs Number of Alternative Transcripts",
ylog=T) +
geom_point(data=lfcTable.percent, alpha=0.5,
aes(x=num.trans, y=abs(Difference)))
# Print the plots
grid.arrange(p1, p2, ncol=1)
grid.arrange(p3, p4, ncol=1)
grid.arrange(p5, p6, ncol=1)
Comparison of Ranking between Salmon and STAR in baseMean/log2FoldChange/FDR
# Set a function rearranging a data frame
rank.fn <- function(df, var, desc=F) {
if (desc) {
df <- dplyr::arrange(df, desc(var))
} else {
df <- dplyr::arrange(df, var)
}
return(df)
}
# Set a function creating a rank plot
rank.plot.fn <- function(df, metric, colog=F) {
if (colog) {
p <- ggplot(df, aes(x=Rank.x,
y=Rank.y,
color=log(MeanValue),
label=Rsquared))
} else {
p <- ggplot(df, aes(x=Rank.x,
y=Rank.y,
color=MeanValue,
label=Rsquared))
}
p <- p +
geom_point(alpha=0.5) +
theme_bw() +
scale_color_gradient(low="blue", high="red") +
xlab("Salmon") +
ylab("STAR") +
ggtitle(paste("Rank Comparison in", metric, "\n(with R-Squared)")) + geom_text(size=5,
mapping=aes(x=Inf, y=Inf), vjust=2, hjust=1.0, color="black") +
geom_abline(slope=1, size=0.5, linetype="dashed", color="black")
return(p)
}# Clean the data frame
lfcTable.rank <- lfcTable %>%
# Splice by columns of interest
dplyr::select(GENEID,
starts_with(c("baseMean_", "log2FoldChange_", "padj_")),
-ends_with("HISAT2")) %>%
# Reform the table
gather(Metric, Value, -GENEID) %>%
# Nest by Metric
group_by(Metric) %>%
nest() %>%
# Add columns storing ascending or descending order by variable of interest
mutate(Ascending=map(data, ~ rank.fn(.x, .x$Value)),
Descending=map(data, ~ rank.fn(.x, .x$Value, T)),
Final=map2(Ascending,
Descending,
~ ifelse(Metric %in% c("padj_Salmon", "padj_STAR"),
Ascending,
Descending)),
Final=map(Final, ~ .x[[1]]),
# Add a column storing rank
Final=map(Final, ~ mutate(.x, Rank=1:nrow(.x)))) %>%
# Unnest
unnest(Final) %>%
# Reform the table
separate(Metric, c("Metric", "Aligner")) %>%
dplyr::select(-data, -Ascending, -Descending) %>%
# Renest by metric
group_by(Metric) %>%
nest() %>%
# Reclean the data frame
mutate(Split=map(data, ~ split(.x, .x$Aligner)),
Joined=map(Split, ~ inner_join(.x[[1]],
.x[[2]],
by=c("GENEID")))) %>%
dplyr::select(-data, -Split) %>%
# Unnest
unnest(Joined) %>%
# Calculate and save MeanRank and MeanValue
mutate(MeanRank=(Rank.x + Rank.y)/2,
MeanValue=abs((Value.x + Value.y)/2)) %>%
# Nest by Metric
nest(-Metric) %>%
# Add a column storing R^2
mutate(Rsquared=map_dbl(data, ~ cor(.x$Rank.x, .x$Rank.y)))
# Explore the data frame
head(lfcTable.rank)## # A tibble: 3 x 3
## # Groups: Metric [3]
## Metric data Rsquared
## <chr> <list> <dbl>
## 1 baseMean <tibble [3,590 × 9]> 0.984
## 2 log2FoldChange <tibble [3,590 × 9]> 0.997
## 3 padj <tibble [3,590 × 9]> 0.945head(lfcTable.rank$data)## [[1]]
## # A tibble: 3,590 x 9
## Aligner.x GENEID Value.x Rank.x Aligner.y Value.y Rank.y MeanRank MeanValue
## <chr> <chr> <dbl> <int> <chr> <dbl> <int> <dbl> <dbl>
## 1 Salmon ENSG000… 1.41e6 1 STAR 1.61e6 1 1 1512960.
## 2 Salmon ENSG000… 4.30e5 2 STAR 4.50e5 2 2 440247.
## 3 Salmon ENSG000… 2.72e5 3 STAR 2.81e5 3 3 276488.
## 4 Salmon ENSG000… 2.03e5 4 STAR 2.16e5 4 4 209624.
## 5 Salmon ENSG000… 1.09e5 5 STAR 1.17e5 6 5.5 113195.
## 6 Salmon ENSG000… 7.08e4 6 STAR 7.37e4 8 7 72243.
## 7 Salmon ENSG000… 7.02e4 7 STAR 7.29e4 9 8 71539.
## 8 Salmon ENSG000… 6.07e4 8 STAR 6.30e4 10 9 61829.
## 9 Salmon ENSG000… 5.08e4 9 STAR 4.41e4 16 12.5 47463.
## 10 Salmon ENSG000… 4.94e4 10 STAR 5.07e4 11 10.5 50018.
## # … with 3,580 more rows
##
## [[2]]
## # A tibble: 3,590 x 9
## Aligner.x GENEID Value.x Rank.x Aligner.y Value.y Rank.y MeanRank MeanValue
## <chr> <chr> <dbl> <int> <chr> <dbl> <int> <dbl> <dbl>
## 1 Salmon ENSG000… 3.83 1 STAR 1.39 156 78.5 2.61
## 2 Salmon ENSG000… 3.76 2 STAR 3.58 3 2.5 3.67
## 3 Salmon ENSG000… 3.17 3 STAR 3.66 1 2 3.42
## 4 Salmon ENSG000… 3.16 4 STAR 2.85 8 6 3.00
## 5 Salmon ENSG000… 3.10 5 STAR 3.16 5 5 3.13
## 6 Salmon ENSG000… 3.07 6 STAR 3.19 4 5 3.13
## 7 Salmon ENSG000… 3.04 7 STAR 2.87 7 7 2.96
## 8 Salmon ENSG000… 2.98 8 STAR 3.59 2 5 3.28
## 9 Salmon ENSG000… 2.80 9 STAR 2.51 13 11 2.65
## 10 Salmon ENSG000… 2.76 10 STAR 2.66 10 10 2.71
## # … with 3,580 more rows
##
## [[3]]
## # A tibble: 3,590 x 9
## Aligner.x GENEID Value.x Rank.x Aligner.y Value.y Rank.y MeanRank
## <chr> <chr> <dbl> <int> <chr> <dbl> <int> <dbl>
## 1 Salmon ENSG000002610… 2.01e-117 1 STAR 6.48e-117 1 1
## 2 Salmon ENSG000001699… 5.84e-114 2 STAR 3.41e-114 2 2
## 3 Salmon ENSG000001185… 1.55e- 77 3 STAR 1.92e- 75 3 3
## 4 Salmon ENSG000001369… 8.64e- 68 4 STAR 3.74e- 67 4 4
## 5 Salmon ENSG000001811… 9.29e- 60 5 STAR 3.00e- 60 6 5.5
## 6 Salmon ENSG000001092… 2.52e- 59 6 STAR 4.64e- 67 5 5.5
## 7 Salmon ENSG000002114… 2.33e- 57 7 STAR 5.70e- 57 7 7
## 8 Salmon ENSG000001736… 2.14e- 55 8 STAR 5.19e- 33 27 17.5
## 9 Salmon ENSG000001387… 2.22e- 54 9 STAR 4.17e- 55 8 8.5
## 10 Salmon ENSG000000384… 3.60e- 53 10 STAR 6.36e- 53 10 10
## # … with 3,580 more rows, and 1 more variable: MeanValue <dbl># Create a vector storing R^2 values as an input of ggplot2()
Rsquared <- plotlabels.fn(lfcTable.rank$Rsquared,
lfcTable.rank$data,
nrow(lfcTable.rank))
# Unnest and add a column storing ggplot2's input R^2
lfcTable.rank <- lfcTable.rank %>%
unnest(data)
lfcTable.rank$Rsquared <- Rsquared
# Check out the new column added
head(lfcTable.rank)## # A tibble: 6 x 11
## # Groups: Metric [1]
## Metric Aligner.x GENEID Value.x Rank.x Aligner.y Value.y Rank.y MeanRank
## <chr> <chr> <chr> <dbl> <int> <chr> <dbl> <int> <dbl>
## 1 baseMe… Salmon ENSG000001… 1.41e6 1 STAR 1.61e6 1 1
## 2 baseMe… Salmon ENSG000002… 4.30e5 2 STAR 4.50e5 2 2
## 3 baseMe… Salmon ENSG000001… 2.72e5 3 STAR 2.81e5 3 3
## 4 baseMe… Salmon ENSG000002… 2.03e5 4 STAR 2.16e5 4 4
## 5 baseMe… Salmon ENSG000001… 1.09e5 5 STAR 1.17e5 6 5.5
## 6 baseMe… Salmon ENSG000001… 7.08e4 6 STAR 7.37e4 8 7
## # … with 2 more variables: MeanValue <dbl>, Rsquared <chr># Clean the data frame
lfcTable.rank <- lfcTable.rank %>%
# Nest by metric
group_by(Metric) %>%
nest() %>%
# Add columns storing scatter plots
mutate(RankPlot=map(data, ~ rank.plot.fn(.x, Metric)),
RankPlot.log=map(data, ~ rank.plot.fn(.x, Metric, T)))
# Set a function simplifying grid.arrange()
gr.ar.fn3 <- function(pl1, pl2) {
grid.arrange(pl1, pl2, nrow=1)
}
# Explore the plots
gr.ar.fn3(lfcTable.rank$RankPlot[[1]],
lfcTable.rank$RankPlot.log[[1]])
gr.ar.fn3(lfcTable.rank$RankPlot[[2]],
lfcTable.rank$RankPlot.log[[2]])
gr.ar.fn3(lfcTable.rank$RankPlot[[3]],
lfcTable.rank$RankPlot.log[[3]])
# Complete the optimal presentation for the plots
gr.ar.fn2(lfcTable.rank$RankPlot.log[[1]],
lfcTable.rank$RankPlot.log[[2]],
lfcTable.rank$RankPlot[[3]])
Saving difference tables
for (x in my.param) {
# Subset by metric
df <- subset(lfcTable.percent, Metric == x)[, 1:5]
# Determine whether ascending or descending order is needed
if (x == "padj") {
# Descending for padj
ordering <- F
} else {
# Ascending otherwise
ordering <- T
}
# Rearrange the data frame using the function rank.fn() set previously
df <- rank.fn(df, abs(df$Percent), desc=ordering)
# Print the output data frame
print(head(df))
# Save as a csv file
write.csv(df,
paste0(x, "_difference_SA_ST.csv"))
}## # A tibble: 6 x 5
## # Groups: Metric [1]
## Metric GENEID Difference num.trans Percent
## <chr> <chr> <dbl> <int> <dbl>
## 1 baseMean ENSG00000233476 -111827. 1 -99.7
## 2 baseMean ENSG00000196205 -128658. 1 -99.6
## 3 baseMean ENSG00000214391 -6445. 1 -98.8
## 4 baseMean ENSG00000196136 1476. 9 98.1
## 5 baseMean ENSG00000010404 5438. 8 94.9
## 6 baseMean ENSG00000167553 -21628. 10 -92.1
## # A tibble: 6 x 5
## # Groups: Metric [1]
## Metric GENEID Difference num.trans Percent
## <chr> <chr> <dbl> <int> <dbl>
## 1 log2FoldChange ENSG00000254634 1.21 1 61.7
## 2 log2FoldChange ENSG00000254206 1.17 2 60.3
## 3 log2FoldChange ENSG00000244722 -1.54 1 -52.7
## 4 log2FoldChange ENSG00000279750 2.44 2 46.7
## 5 log2FoldChange ENSG00000196205 0.539 1 46.1
## 6 log2FoldChange ENSG00000260518 -0.788 4 -43.9
## # A tibble: 6 x 5
## # Groups: Metric [1]
## Metric GENEID Difference num.trans Percent
## <chr> <chr> <dbl> <int> <dbl>
## 1 padj ENSG00000113569 -0.000000577 8 -0.000670
## 2 padj ENSG00000185942 0.0000000115 12 0.00189
## 3 padj ENSG00000144028 -0.00000682 9 -0.00667
## 4 padj ENSG00000071967 -0.000000421 7 -0.00711
## 5 padj ENSG00000024862 -0.0000000466 1 -0.00789
## 6 padj ENSG00000277443 -0.00000116 1 -0.0118Saving gene rankings
lfcTable.csv <- lfcTable %>%
dplyr::select(GENEID, starts_with(my.param[-1])) %>%
gather(Category, Value, -GENEID) %>%
separate(Category, c("Metric", "Aligner")) %>%
pivot_wider(names_from=Metric, values_from=Value)
write.csv(lfcTable.csv, "lfcTable.csv") Session Info
sessionInfo()## R version 4.0.3 (2020-10-10)
## Platform: x86_64-conda-linux-gnu (64-bit)
## Running under: Ubuntu 20.04.2 LTS
##
## Matrix products: default
## BLAS: /home/mira/miniconda3/envs/r/lib/libblas.so.3.8.0
## LAPACK: /home/mira/miniconda3/envs/r/lib/liblapack.so.3.8.0
##
## locale:
## [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
## [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
## [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
## [7] LC_PAPER=en_US.UTF-8 LC_NAME=C
## [9] LC_ADDRESS=C LC_TELEPHONE=C
## [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
##
## attached base packages:
## [1] stats4 parallel stats graphics grDevices utils datasets
## [8] methods base
##
## other attached packages:
## [1] gridExtra_2.3 ensembldb_2.14.0
## [3] AnnotationFilter_1.14.0 GenomicFeatures_1.42.1
## [5] AnnotationDbi_1.52.0 UpSetR_1.4.0
## [7] DESeq2_1.30.1 SummarizedExperiment_1.20.0
## [9] Biobase_2.50.0 MatrixGenerics_1.2.0
## [11] matrixStats_0.58.0 GenomicRanges_1.42.0
## [13] GenomeInfoDb_1.26.0 IRanges_2.24.1
## [15] S4Vectors_0.28.1 Rsubread_2.4.0
## [17] tximport_1.18.0 AnnotationHub_2.22.0
## [19] BiocFileCache_1.14.0 dbplyr_2.1.0
## [21] BiocGenerics_0.36.0 pheatmap_1.0.12
## [23] rmarkdown_2.7 forcats_0.5.1
## [25] stringr_1.4.0 dplyr_1.0.5
## [27] purrr_0.3.4 readr_1.4.0
## [29] tidyr_1.1.3 tibble_3.1.0
## [31] ggplot2_3.3.3 tidyverse_1.3.0
## [33] data.table_1.14.0
##
## loaded via a namespace (and not attached):
## [1] colorspace_2.0-0 ellipsis_0.3.1
## [3] XVector_0.30.0 fs_1.5.0
## [5] rstudioapi_0.13 farver_2.0.3
## [7] bit64_4.0.5 interactiveDisplayBase_1.28.0
## [9] fansi_0.4.2 lubridate_1.7.10
## [11] xml2_1.3.2 splines_4.0.3
## [13] cachem_1.0.4 geneplotter_1.68.0
## [15] knitr_1.31 jsonlite_1.7.2
## [17] Rsamtools_2.6.0 broom_0.7.5
## [19] annotate_1.68.0 shiny_1.6.0
## [21] BiocManager_1.30.10 compiler_4.0.3
## [23] httr_1.4.2 backports_1.2.1
## [25] lazyeval_0.2.2 assertthat_0.2.1
## [27] Matrix_1.3-2 fastmap_1.1.0
## [29] cli_2.3.1 later_1.1.0.1
## [31] prettyunits_1.1.1 htmltools_0.5.1.1
## [33] tools_4.0.3 gtable_0.3.0
## [35] glue_1.4.2 GenomeInfoDbData_1.2.4
## [37] rappdirs_0.3.3 Rcpp_1.0.6
## [39] cellranger_1.1.0 jquerylib_0.1.3
## [41] Biostrings_2.58.0 vctrs_0.3.6
## [43] rtracklayer_1.50.0 xfun_0.21
## [45] ps_1.5.0 rvest_0.3.6
## [47] mime_0.10 lifecycle_1.0.0
## [49] XML_3.99-0.5 zlibbioc_1.36.0
## [51] scales_1.1.1 ProtGenerics_1.22.0
## [53] hms_1.0.0 promises_1.2.0.1
## [55] RColorBrewer_1.1-2 yaml_2.2.1
## [57] curl_4.3 memoise_2.0.0
## [59] sass_0.3.1 biomaRt_2.46.3
## [61] stringi_1.5.3 RSQLite_2.2.3
## [63] highr_0.8 BiocVersion_3.12.0
## [65] genefilter_1.72.1 BiocParallel_1.24.0
## [67] rlang_0.4.10 pkgconfig_2.0.3
## [69] bitops_1.0-6 evaluate_0.14
## [71] lattice_0.20-41 labeling_0.4.2
## [73] GenomicAlignments_1.26.0 bit_4.0.4
## [75] tidyselect_1.1.0 plyr_1.8.6
## [77] magrittr_2.0.1 R6_2.5.0
## [79] generics_0.1.0 DelayedArray_0.16.0
## [81] DBI_1.1.1 pillar_1.5.0
## [83] haven_2.3.1 withr_2.4.1
## [85] survival_3.2-7 RCurl_1.98-1.2
## [87] modelr_0.1.8 crayon_1.4.1
## [89] utf8_1.1.4 progress_1.2.2
## [91] locfit_1.5-9.4 grid_4.0.3
## [93] readxl_1.3.1 blob_1.2.1
## [95] reprex_1.0.0 digest_0.6.27
## [97] xtable_1.8-4 httpuv_1.5.5
## [99] openssl_1.4.3 munsell_0.5.0
## [101] bslib_0.2.4 askpass_1.1